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DomBusEVSE: slimme module om een EV-laadstation te maken (Wallbox)
Slimme EVSE-module om zelf een EV-laadstation (wallbox) te maken dat ook werkt met het domoticz-domoticasysteem
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Creasol DomBusEVSEis een volledig geteste DIN-rail module, ontworpen voor Domoticz domotica systeemelektrische voertuigen opladen met de standaardIEC 62196-2Modus3(AC-lading, tot 22kW vermogen).
Het werkt alsop zichzelf staand(zonder enige domotica controller) of inbeheerde modus(laadstroom geregeld door Domoticz).
In stand-alone modus werkt hij alleen als enkelfasige lader, omdat het alleen DDS238-2 ZN/S energiemeter (enkelfasig) kan lezen;met domoticz domotica kan driefasig opladen worden beheerddoor de huidige waarde van het netvermogen van Domoticz op te halen (bijv. SDM630 of andere vermogensmeter die al in Domoticz is geïnstalleerd). De vermogenswaarde van het elektriciteitsnet is nodig voor DomBusEVSE om de laadstroom te regelen om overbelasting/onderbrekingen te voorkomen, en ook om het door de gebruiker ingestelde maximale vermogen te behouden: meer info hieronder.
Functies
- Beheert tot 4klasse-1 (zeer nauwkeurig)Modbus energiemetersDDS238-2 ZN/S (enkelfasig), één om het laadvermogen/-energie te meten, één om het vermogen/de energie die wordt uitgewisseld met het elektriciteitsnet te meten. Kan ook worden aangesloten op 2 andere energiemeters om indien nodig andere belastingen/circuits te bewaken (warmtepomp, keuken, ...). Omdat energiemeters echt nauwkeurig zijn, is het mogelijk om te krijgennauwkeurige statistieken en grafiekenover de energie die wordt gebruikt om het elektrische voertuig op te laden en de energie die wordt uitgewisseld met het net.
- Bestuurt een externe 2P-schakelaar om de netvoeding naar de elektrische auto in of uit te schakelen en controleert volledig of de schakelaar werkt zoals verwacht.
- 5 werkmodi, die kan worden geconfigureerd door de Domoticz UI of door 2 OMHOOG/OMLAAG-knoppen:
UIT: EV opladen uitgeschakeld (led status: rood)
ZONNE: gebruik alleen energie van het zonnestelsel en zorg ervoor dat de stroom van het net 0 is (LED-status: groen)
25%: gebruik zowel zonne-energie als netenergie, max. 25% van het beschikbare vermogen (bijvoorbeeld met een contract van 6 kW, gebruik max. 1500 W van het net, + beschikbaar vermogen van zonne-energie) (LED-status: geel)
50%: gebruik zowel zonne- als netenergie, max. 50% van de stroombeschikbaarheid (bijv, met 6kW contract, gebruik max 3kW van het net) (led status: geel)
75%: gebruik zowel zonne- als netenergie, max. 75% van het beschikbare vermogen (bijvoorbeeld met een contract van 6 kW, max. 4500 W van het net gebruiken) (LED-status: geel)
100%: gebruik zowel zonne- als netenergie, max vol vermogen (bijvoorbeeld met 6kW contract max 6kW gebruiken) (led status: geel)
BEHEERD: laadstroom ingesteld door de domotica controller (bijvoorbeeld door een script) (led status: blauw) - AUTOMATISCHE STARTfunctie: druk lang op de knop OMLAAG (1 seconde) om het opladen te stoppen, of de ontkoppeling van het voertuig zet de modus op UIT. Wanneer het voertuig weer wordt aangesloten, wordt de laadmodus automatisch hersteld naar de vorige laadmodus. Als de oplaadmodus bijvoorbeeld wasZONNE, elke keer dat het voertuig is aangesloten, wordt de oplaadmodus ingesteld opZONNEautomatisch.
AUTOSTART kan worden uitgeschakeld, zodat wanneer het voertuig is aangesloten, het laadproces niet automatisch start, maar handmatig start (UP-knop om de modus te wijzigen, of door de webgebruikersinterface) of start op basis van tijd (een eenvoudige regel op de domoticacontroller om bijvoorbeeld 's nachts starten en stoppen met laden). - Het laat zienmooie grafiekenmet
-oplaadvermogen/energie, dat wil zeggen differentiëren in de twee volgende grafieken
- laadvermogen/energievan zonne-energie(fotovoltaïsche of andere hernieuwbare bron)
- opladenstroom/energie van het elektriciteitsnet
- laadspanning en arbeidsfactor
- totaal vermogen/energie van het net
- netspanning, arbeidsfactor en frequentie - RGB led-display huidige EV-status:
EV losgekoppeld: 1 keer groen knipperen
EV aangesloten: 2 keer groen knipperen
EV opladen: blauwe led knippert 1 of meerdere keren, geeft het huidige vermogen aan (1 keer knipperen => minder dan 1kW, 2 keer knipperen => minder dan 2kW, ...)
EV-fout: 1 of meer rode flitsen
Wanneer een nieuwe EV-modus wordt geselecteerd (van smartphone of met behulp van de UP/DOWN-knop), toont de RGB-led de huidige modus gedurende 1 seconde.
Hoe werkt een EVSE?
Hoewel dit een volledig getest product is, mag het alleen door technische ingenieurs worden gebruikt voor ontwikkeling of demonstratie. Creasol wijst alle verantwoordelijkheid af voor schade aan zaken of personen.
De netvoeding (230V enkelfasig, 400V driefasig) is aangesloten op het voertuig via een 2P- of 4P-schakelaar (relais) om te verzekeren dat er geen stroom wordt toegevoerd wanneer de laadsessie UIT is.
Alleen de stuurautomaatdraad + aarde/massa zijn aangesloten op de EVSE-module: de stuurautomaat wordt beschermd door een apparaat voor overspanningsonderdrukking.
Een slimme EVSE-module:
- bewaakt de netspanning door middel van een energie/vermogensmeter
- monitorende laadstroomvoorziening, via een andere energie-/vermogensmeter
- bewaakt de stuurautomaat om de status van het voertuig te controleren (losgekoppeld, aangesloten, opladen aangevraagd, ventilatie aangevraagd, alarm)
- stuur een 1 KHz PWM-signaal naar de auto om de maximaal beschikbare laadstroom te specificeren
- activeert de netvoeding via een schakelaar
- registreert alle maatregelen om mooie grafieken te maken die het mogelijk maken om een statistiek te hebben over het verbruik van elektrische auto's
Met Domoticz is het ook mogelijk om de voertuigcloud te verbinden om andere informatie te krijgen over de laadtoestand van de batterij, kilometerteller, locatie, snelheid, ...
Hoe maak je een doe-het-zelf Smart Wallbox (EV-laadstation) met Creasol DomBusEVSE?
Het volgende diagram toont de aansluiting van de EVSE-module op de energiemeter, contactor, aardlekschakelaar om een complete slimme wallbox te krijgen, enkelfasig 230V, die de netstroom detecteert om de beste laadsnelheid te krijgen en overbelasting en ontkoppelingen te voorkomen.Blokschema is ook beschikbaar in PDF-formaat.
Het is mogelijk om een driefasige lader te maken door de schakelaar te vervangen door een 4P-versie en een driefasige energiemeter te gebruiken die is aangesloten op Domoticz, zodat de stroom die van het elektriciteitsnet wordt afgevoerd door Domoticz wordt teruggevoerd naar de DomBusEVSE-module.
Dit apparaat is alleen ontworpen voor technische ingenieurs, voor ontwikkelingsdoeleinden. Creasolwijst elke verantwoordelijkheid af voor schade aan zaken of personen.
Stuklijst
- EVSE-moduleCreasolDomBusEVSE
- Aardlekschakelaar type Bdie differentiële stromen kan detecteren die het circuit beschermen, zelfs als de stromen in gelijkstroom zijn.
- Eenenergie meterDDS238-2 ZN/S(Modbus-versie)om rekening te houden met de energie die aan het voertuig wordt toegevoerd, laadvermogen, ... Dit is een klasse-1 energiemeter dus zeer nauwkeurig.Deze energiemeter is niet essentieel: het is mogelijk om het weg te laten om ruimte en kosten te besparen, maar u verliest de statistieken en grafieken over het vermogen en de energie die wordt gebruikt voor het opladen van het voertuig.
- Een2P 40A schakelaar(4P-schakelaarin het geval van een driefasige lader) om de netvoeding naar het voertuig in of uit te schakelen, waarbij het voertuig wordt losgekoppeld als het laadproces is uitgeschakeld.
- Eenenergie meterDDS238-2 ZN/Saangesloten op het elektriciteitsnet, om het import-/exportvermogen te detecteren en rekening te houden met energie, spanning, arbeidsfactor en frequentie. Dit is ook goed om het vermogen en de energie te meten die door het gebouw worden verbruikt, en heeft mooie grafieken die deze parameters door de jaren heen laten zien.
In het geval dat er al een vermogensmeter bestaat, levert een vermogenswaarde met een interval van maximaal 10 seconden,het is mogelijk om het te gebruiken zonder de meter aan te sluiten op DomBusEVSE, maar door een eenvoudig script toe te voegen dat een virtueel apparaat insteltNetstroomop DomBusEVSEwanneer het vermogen verandert; de vermogenswaarde moet negatief zijn in het geval dat vermogen wordt geëxporteerd naar het net. - Type-2 of Type-1 kabelom het voertuig aan te sluiten, en natuurlijk wat draden om alle onderdelen met elkaar te verbinden. EV-kabel voor enkelfasig opladen heeft 4 draden: lijn, nulleider, PE en stuurautomaat.
- Als de voeding van 13,6 Vdc ontbreekt, avoeding 13.6V 15Wis nodig
- Als er geen DomBus-netwerk is geïnstalleerd, aEr is een USB/RS485-adapter nodig om de domoticacontroller te koppelen
- Als er geen domoticacontroller was geïnstalleerd, een enkelvoudige boordcomputer zoals Rock PI-S (voor een basisdomoticacontroller met weinig automatiseringen), Raspberry PI4 of vergelijkbaar (krachtiger, handig om een volledig domoticasysteem te hebben met meerdere automatiseringen en honderden apparaten) nodig is, net als een 12V naar 5V DC/DC-converter om de single board computer van stroom te voorzien.
Configuratie
Maak alle bedrading zoals aangegeven in het bovenstaande schema (klik om het PDF-schema met hogere resolutie te krijgen), maar sluit alleen de energiemeter die energie meet aan op het elektrische voertuig.
We raden aan om de wallbox-modules in een schakelkast binnenshuis te plaatsen, mogelijk in de buurt van het punt waar u uw auto parkeert, maar ook in de buurt van de hoofdschakelkast of de omvormer voor zonne-energie, indien aanwezig, om de kabellengte te minimaliseren: gebruik 6 mm² (of 10 mm²) draden voor de netvoeding. Plaats vervolgens een klein kastje van 10x10cm waar de elektrische auto geparkeerd staat, binnen of buiten, verbonden door 3x 6mm² (of 10mm²) draden (L,N,PE) plus een afgeschermde 2x0.22 mm² kabel (standaardkabel voor alarmsystemen): één draad is aangesloten op het CP-klemmenblok (besturingspiloot) en andere draad + afscherming zijn aangesloten op PE/GND. Op het kastje wordt de Type-2 of Type-1 kabel (met alleen stekkerverbinding naar het voertuig) aangesloten.
In het geval dat het apparaat stand-alone wordt gebruikt, zonder aangesloten domoticacontroller, moeten energiemeters al zijn geconfigureerd met Modbus-adres=2 (naar EV) en adres=3 (naar net): ze kunnen worden gekocht bij Creasol Store en vragen om adres al geprogrammeerd. Het is ook mogelijk om te vragen dat de EVSE-module is voorgeprogrammeerd met de juiste waarde van MAXPOWER (max. vermogen van het net), MAXCURRENT (max. stroom ondersteund door de EV-kabel).
De volgende instructies hebben betrekking op de Domoticz- controller, een gratis open-source domotica-controller die een volledige controle over de wallbox mogelijk maakt en die ten zeerste wordt aanbevolen : het werkt in goedkope hardware zoals Rock PI-S of Raspberry PI4 , net als Linux-computers, Windows en Mac.
Het is aan te raden om Domoticz Beta te installeren, wat up-to-date is, Python Plugin Manager (niet beschikbaar in Windows), daarna is het mogelijk om de Creasol DomBus plugin te installeren vanuit Python Plugin Manager: op deze manier is het mogelijk om notificaties te krijgen over toekomstige updates van de DomBusplug-in en automatische upgrade.
DomBusEVSE kan via een USB/RS485-adapter op de domoticacontroller / pc worden aangesloten: een apparaat wordt automatisch toegevoegd aan Domoticz -> Schakelpaneel, met fabrieksinstelling adres ffe3.1: klik op de knop Bewerken en voeg toe aan de Beschrijving , HWADDR =0x0001 of een ander uniek adres, klik vervolgens op de knop Opslaan: klik op Dashboard en vervolgens weer op Switches om onderaan de EVSE-apparaten te zien: EVSE On, RL2, EVSE Supply, EVSE Mode, EVSE State, EVSE Current. Klik op EVSE-modus, bewerk de parameters MAXPOWER en MAXCURRENT en sla op.
Maak een nieuwe kamer om alle EVSE-apparaten te groeperen: Instellingen -> Meer opties -> Plannen -> Ruimteplan, voeg een nieuwe Wallbox of iets anders toe en voeg alle apparaten toe met een adres dat overeenkomt met de eerder ingestelde HWADDR. Klik vervolgens op Dashboard en selecteer de Wallbox- ruimte.
Aangezien energiemeters in de fabriek zijn geprogrammeerd met Modbus-adres 1, sluit u eerst de energiemeter aan tussen aardlekschakelaar type B en contactor en wijst u adres = 2 op deze manier toe: selecteer Domoticz -> Utility -> M1 Addr-apparaat, klik op de knop Bewerken en schrijf in het veld Beschrijving ,ADDR=2 en sla vervolgens op. Sluit vervolgens de hoofdenergiemeter aan (die het met het net uitgewisselde vermogen meet) en wijs adres=2 toe: selecteer Domoticz -> Utility -> M1 Addr-apparaat, klik op de knop Bewerken en schrijf in het veld Beschrijving ,ADDR=3 en sla het op.
Indien een energiemeter aangesloten op de elektriciteitsgrid al beschikbaar is, is het voldoende om een eenvoudig script te installeren dat, wanneer de stroom van het net verandert, de waarde van het "virtuele apparaat" bijwerktNetstroomdat wordt automatisch aangemaakt
Ten slotte heeft DomBusEVSE extra ondersteuning voor:
* SPST-relaisuitgang RL2, met 250V 5A-mogelijkheid, die voor elk doel kan worden gebruikt
* tot 4 energiemeters, dus 2 extra energiemeters (met adres=4 en 5) kunnen worden aangesloten om vermogensstatistieken te krijgen voor de warmtepomp, keuken, ....
Alle onderdelen moeten aanwezig zijn in deCreasol-winkel, maar niet de Type-2 of Type-1 kabel.
Domoticz en DomBusEVSE
De volgende afbeelding toont de integratie in Domoticz van de EV (Kia Niro-auto, met behulp van de plug-in die beschikbaar is met Python Plugin Manager) en de DomBusEVSE-module; het laat zieneen reisnaar het Gardameer, Noord-Italië, met eenkorte laadsessie bij een 11kW station, endaarna een lange oplaadsessie met de DomBusEVSE wallbox in SOLAR-modus(enkel energie uit fotovolticum).
Tijdens de oplaadsessie thuis, in de SOLAR-modus, waren zowel de wasmachine als de oven ingeschakeld: in dit geval reduceerde de EVSE-module de laadstroom tot het minimum en beëindigde na 90 seconden de sessie totdat het beschikbare vermogen weer boven de STARTPOWER-parameter kwam . Zoals weergegeven in de onderstaande grafieken, zorgt de module ervoor dat er geen stroom van het net komt, in de SOLAR-modus.
DomBusEVSE-wallbox in beheerde modus
Wanneer de DomBusEVSE-module is geconfigureerd inbeheerde modus, Domoticzis verantwoordelijk voor het instellen van de laadstroom zoals gewenst. Vanzelfsprekend worden alle beveiligingen met betrekking tot maximale stroom, minimale stroom en eventuele alarmen van de auto correct beheerd door de EVSE-module.
In de beheerde modus is het eenvoudig om:
1. stel eenvoudig deminimum en maximum batterijniveau
2. stel eenvoudig demaximale laadstroom
3.wanneer het batterijniveau onder het minimum is, laadt u op met het maximale vermogentoegestaan door de elektriciteitsmeter (in Italië afwisselend 90 minuten op maximaal vermogen + 27% en 90 minuten op maximaal vermogen + 10%,sneller opladen kan niet!Het elektrische systeem moet zorgvuldig worden gecontroleerd bij gebruik van maximaal vermogen, om oververhitting en brand te voorkomen!!)
4.wanneer het batterijniveau zich tussen het minimum en het maximum bevindt, laad dan alleen op met energie uit hernieuwbare energie uit fotovoltaïsche energie
Ook kan het maximale netvermogen worden aangepast om het maximale uit het net te halen.De onderstaande grafiek toont het geval van Italië, waar het maximaal beschikbare vermogen P+10% voor altijd is, en P+27% voor maximaal 90 minuten elke 180 minuten: laadvermogen zal zo hoog mogelijk zijn,het regelen van het laadvermogen om het maximaal beschikbare vermogen te krijgen om ontkoppelingen te voorkomen. Het laadvermogen wordt elke 6 seconden bijgewerkt om voor andere gebouwen te zorgenapparaten.
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Elektrische auto opladen wanneer er een stationaire accu beschikbaar is
In het geval dat een stationaire accu in het gebouw is geïnstalleerd, zijn er twee gevallen mogelijk:
1. de DomBusEVSE-netenergiemeter wordt vóór de stationaire accu/omvormersensor geïnstalleerd (netvoeding -> DomBusEVSE-energiemeter -> batterijsensor)
2. de DomBusEVSE-netenergiemeter wordt geïnstalleerd na de stationaire accu/omvormersensor (netvoeding -> batterijsensor -> DomBusEVSE-energiemeter)
Om deze twee gevallen uit te leggen, gaan we ervan uit dat fotovoltaïsche energie 3kW produceert, het huis 1kW verbruikt, het maximale vermogen van de batterij 5kW is en het maximale vermogen van het net 6kW
| EVSE-modus | UIT | ZONNE | 25% | 50% | 75% | 100% |
| Case #1 oplaadvermogen (EVSE-meter, den batterijmeter) |
0 | 3-1=2kW | 3-1+1,5=3,5kW | 3-1+3=5kW | 3-1+4,5=6,5kW | 3-1+6=8kW |
| Geval #2 laadvermogen (batterijmeter, dan EVSE-meter) |
0 | 3-1+5=7kW | 3-1+5+1,5=8,5kW | 3-1+5+3=10 kW | 3-1+5+4,5=11,5kW | 3-1+5+6=13 kW |
Het is duidelijk dat een parameter de maximale stroom instelt die door de kabel wordt ondersteund, dat is meestal 32A, dus het laadvermogen is beperkt tot 7-8kW in een enkele fase.
For any questions, suggestions, feature requests, contact us by Telegram, group DomBus.
Video showing Creasol DomBus modules in brief
DomBus modules installation block chart
Often it's important to have a stable power to supply your Smart Home, to avoid troubles with the domotic controller (RaspberryPI or other), have internet connection always ON and are able to manage alarm sensors even in case of power outage.
- Use a 12V power supply unit with backup battery charger, to avoid trouble on RaspberryPI or other devices. Also, in this way it's possible to get everything working even in case of power outage (domotic controller, domotic modules, network switches, routers, NVR and IPcams).
- Use a 12V lead-acid battery well dimensioned to supply everything during blackout.
- Use a DC/DC converter 12V → 5V 3A to supply the RaspberryPI, if you have it.
- To use DomBus modules, use a standard alarm shielded cable (within 4 wires) to interconnect all modules to RaspberryPI (through a cheap RS485 to USB adapter).
- Protect each bus with a fuse
Ports parameters
The following table shows how to configure a DomBus device by Modbus protocol or DomBus plugin/software.The first two columns show the Modbus register address and supported values, and are applicable to the module programmed with Modbus firmware, working with Node-RED, Home Assistant, ...
The third column describe how to configure parameters from Domoticz by using the Creasol DomBus plugin, and is applicable to the module programmed with Dombus firmware (working with Domoticz).
| Modbus address | Modbus value | DomBus parameter | Function |
|---|---|---|---|
| 8192 | 1-247 | HWADDR=0xNNNN | This command sets a new address for the DomBus module. Be sure to assign to each module a unique address, to avoid conflicting modules. DomBus protocol and Domoticz: choose a device associated to the module, edit and add in the description field the text ,HWADDR=0x0001 for example, to assign address 1 to the module. Reload the Switches panel to see the new devices associated to the new module address. NNNN must be a number in exadecimal format, from 0x0001 to 0xff00, so 65280 combinations are available. Keep note of address assegnated to each dombus device, because in case of conflicting addresses it's needed to switch off one of the conflicting device and program the remaining one to another address, or make a factory reset as explained below. Domoticz example: ID=ff23.1,OUT_RELAY_LP,HWADDR=0x2301 to change address from ff23 to 2301 Modbus example using the program mbpoll: mbpoll -v -b115200 -Pnone -mrtu -a227 -0 -1 -r8192 /dev/ttyUSB0 12 to change address from 227 to 12 |
| 8193 | 0-7 | Not available | Set the serial bitrate to: 0 → 115200 bps (default) 1 → 57600 bps 2 → 38400 bps 3 → 19200 bps 4 → 9600 bps 5 → 4800 bps 6 → 2400 bps 7 → 1200 bps Modbus example using the program mbpoll: mbpoll -v -b115200 -Pnone -mrtu -a227 -0 -1 -r8193 /dev/ttyUSB0 4 to change bitrate from 115200 to 9600bps |
| 8194 | 0-2 | Not available | Set the serial parity to: 0 → none (default) 1 → even 2 → odd Modbus example using the program mbpoll: mbpoll -v -b115200 -Pnone -mrtu -a227 -0 -1 -r8194 /dev/ttyUSB0 1 to change parity from none to even |
| 512+Port#-1 | 0 | NORMAL | Used the standard logic state for an input or output: for a digital input, On correspond to high voltage (normally 3.3V) and Off with low voltage (input shorted to GND); for an output, On corresponds to relay or open-drain mosfet active, while Off corresponds to relay/mosfet disabled. Can be used inverted with the INVERTED option (below). Domoticz example: ID=2301.1,OUT_RELAY_LP,NORMAL to get relay active when ON, and deasserted when OFF (normal behaviour). To invert, write INVERTED instead of NORMAL. |
| 512+Port#-1 | 1 | INVERTED | Used to invert the logic state of an input or output. Can be used in conjuction with OUT_DIGITAL, OUT_RELAY_LP, IN_DIGITAL, DIMMER. For digital inputs, On corresponds with input shorted to GND, while Off corresponds to input open (with internal pullup to 3V3). For outputs, On means that relay/mosfet output is OFF and OFF means that relay/mosfet output is ON. Domoticz example: ID=2301.1,OUT_RELAY_LP,INVERTED to get relay normally active (when domoticz device is Off). To negate this condition, write NORMAL instead of INVERTED. |
| 512+Port#-1 | 2 | PULLUP | Used to force the microcontroller internal pullup. Domoticz example: ID=2301.6,IN_DIGITAL,PULLUP to have the pullup active on port 6 (default behaviour) |
| 512+Port#-1 | 4 | PULLDOWN | Used to force the microcontroller internal pulldown. Can be used on inputs that should be normally at logic level 0, and should go to level 1 when a positive voltage is applied to the port. Domoticz example: ID=2301.6,IN_DIGITAL,PULLDOWN to have the internal pulldown active on port 6. To restore to the default behaviour, write PULLUP instead of PULLDOWN. |
| 256+Port#-1 | 1 | OUT_DIGITAL | Digital output, open-drain or relay output. For this kind of port it's possible to set the port value to 0 → OFF 1 or 0xff00 → ON forever From 2 to 1920 → N*31.25ms (1920=60s) From 1921 (61s) to 3540 (3600s=1h) → 1s resolution From 5461 (61m), 6840 (1440m=24h) → 1m resolution From 6841 (25h) to 65535 → 1h resolution Domoticz example: ID=2301.1,OUT_DIGITAL to configure the port 1 as a digital output |
| 256+Port#-1 | 2 | OUT_RELAY_LP | Can be used with relay outputs and open-drain outputs connected to relay coil, to reduce power consumption As for OUT_DIGITAL mode, it's possible to specify a port value to get OFF and ON state, and ON including a timeout (monostable) Domoticz example: ID=2301.1,OUT_RELAY_LP to configure the port 1 as a relay output optimized for low power consumption. |
| 256+Port#-1 | 4 | OUT_DIMMER | Set the output as DIMMER, from 0 to 100% using 5% step, 500Hz frequency. Suitable to control LED strip lights Domoticz example: ID=2301.7,OUT_DIMMER to configure IO7 as output with dimmer function. |
| 256+Port#-1 | 5 | OUT_BUZZER or OUT_FLASH (same behaviour) | In case the port supports OUT_BUZZER mode, it's possible to connect a piezo buzzer (without the oscillator inside!!) between this port and the next one (push-pull, 3.3V, 6.6V peak-to-peak) to get a 5KHz signal on buzzer. In case the port does not support OUT_BUZZER mode (Led, I/O, open-drain or relay output), the I/O can be used to supply a LED or a blinker. The Domoticz switch should be configured as Selector Switch: in this case the port will output 1 more short alerts to notify a status, followed by a 2s pause. Using Modbus version, the Port#-1 register value can be set to: 0 → buzzer/led/blinker OFF 1 → buzzer/led/blinker ON 2 → buzzer/led/blinker ON for 250ms 3 → buzzer/led/blinker ON for 500ms 4 → buzzer/led/blinker ON for 750ms ... 9 → buzzer/led/blinker ON for 2s 10 → 1 beep/flash, then 2s pause, forever 11 → 1 beep/flash, 2s pause, then OFF 12 → 1 beep/flash, 2s pause, for 2 times 13 → 1 beep/flash, 2s pause, for 3 times ... 19 → 1 beep/flash, 2s pause, for 9 times 20 → 2 beeps/flash, 2s pause, forever 21 → 2 beeps/flash, 2s pause, then OFF and so on... The same behaviour when using DCMD command to control a buzzer/led/blinker output. Please note that some I/O may need to have the INVERTED option set, to work as expected. Domoticz example: ID=2301.6,OUT_FLASH to configure port as Led/Buzzer sending pulses to notify a status. |
| 256+Port#-1 | 24 | OUT_BLIND |
Port configured to control a blind, in close direction. Next port will be automatically configured as blind in open direction. Ports OUT1 and OUT2 can directly be connected to 12V relay coils (if Vbus is 12-14V, or 24V relay coils if Vbus is 24V). Ports IN1..IN3 can be configured as OUT_BLIND, but in this case should be connected to relayboard that already have a transitors/optocouplers to drive relays. Domoticz example: ID=2301.1,OUT_BLIND to configure output as Motor DOWN/UP (next port will be used to supply the UP coil of the motor). |
| 256+Port#-1 | 3 | OUT_LEDSTATUS | Configure a LED port to show the device status (flashes when a frame is transmit to the RS485 bus) Domoticz example: ID=5101.a,OUT_LEDSTATUS to configure port 10 (0x0a in hex correspond to 10 in decimal) as LED status which flashes when a frame is transmitted. |
| 256+Port#-1 | 25 | OUT_ANALOG | Set output as analog, with 0-10V linear output. It can be used to control another electronic board with 0-10V or 1-10V input (light dimmer, heat pump power, linear valve, ....). The domotic controller will display a device with a slider, like dimmer, with values from 0 (=0V) to 100 (=10V). Using Domoticz, it's possible to create LUA or dzEvent automations that automatically change the output voltage according to some inputs (brightness, temperature, renewable power availability, ...): the DAC value can be set using the syntax commandArray['DEVICE_NAME']='Set Level 74'
to set the output voltage to 7.4V.Domoticz example: ID=2301.4,OUT_ANALOG to configure port as 0-10V analog output |
| 256+Port#-1 | 7 | IN_DIGITAL | Digital input, is On when the corresponding input is at high voltage level (open), and Off when the corresponding input is at GND (shorted). To inverted the logic (On when input is shorted to GND and Off when it's open) set the INVERTED option. Domoticz example: ID=2301.6,IN_DIGITAL,INVERTED to configure port 6 as digital input, inverted logig so the logic status is ON when port voltage is 0V and OFF when port voltage is high. |
| 256+Port#-1 | 11 | IN_DIGITAL_PULLDOWN | Digital input with microcontroller pulldown enabled: if no external pullup are enabled, the input is normally at 0V (logic 0) and goes to logic 1 when a positive voltage is applied (up to 30V for DomBus37, but should be no more than 5V with other modules). It's possible to invert the logic by setting the INVERTED option. Domoticz example: ID=3701.12,IN_DIGITAL_PULLDOWN to configure port 12 as digital input, ON when a positive voltage is applied to the port. |
| 256+Port#-1 | 6 | IN_AC | Optoisolated input, used to monitor the presence of the AC voltage (100-250Vac). Return 1 in case that voltage is applied, 0 if no voltage is applied to the AC input. It's possible to invert the logic by setting the INVERTED option. Dombus modules that have at least one IN_AC input, since 2024-09-24 the first AC input (INAC or INAC1 port) is used also as a zero-crossing detector to switch ON/OFF relays minimizing the in-rush current (when enabling power to capacitive loads) and overvoltage (when disabling power to inductive loads). Domoticz example: ID=3701.13,IN_AC to configure port 13 as digital input, ON when AC voltage is applied, OFF when no voltage is applied (power outage?). |
| 256+Port#-1 | 8 | IN_ANALOG | Port configured as IN_ANALOG can be used to measure DC voltage, like battery voltage, bus voltage, thermistors and temperature sensors, .... The voltage is sampled every 15 seconds. On DomBusTH, one or more of the 4 input wires can be configured as analog inputs, 0-3V range, but please note that an internal 10k pullup resistor is connected to each input. Also, external resistive divider should be added to measure higher voltages, so the voltage at the input terminal block must be less or equal than 3.3V. On DomBus12 it's possible to use IO7, IO8 and IO9 ports as analog inputs. Also, it's possible to use IO1, IO2, IO3, IO4 ports as analog inputs, but in this case it's needed to open, using a cutter, the corresponding PCB jumper PU1-PU4 (that internally connect the input line with a 10k pullup resistor): for example, to use IO1 as analog input, the PU1 PCB jumper must be open. Analog voltage must not exceed the 0-3V range: if voltage range is higher, a resistive divider must be applied externally. On DomBus23 only IO1 and IO2 ports can be configured as analog inputs: only 0-3V range is supported, and a resistive divider must be externally connected to measure higher voltages. Other DomBus modules have ANALOG inputs: check the specification on the product page. Domoticz example: ID=2301.6,IN_ANALOG,A=0.000611393 to set port as analog input (with output value in the range 0-65535 corrisponding to 0V-3.3V) with the linear conversion using the specified A coefficient. |
| 256+Port#-1 | 9 | IN_TWINBUTTON | This is a method to connect two pushbuttons/switches to a single input, to get a UP/DOWN/STOP select switch. The two switches are connected together by a 10kOhm resistor, using the schema indicated in the application notes below. Ports on DomBus module must have an internal 10k pullup (always enabled, or enabled by a PCB jumper), and output value are: 0 → OFF (buttons not pushed) 10 → DOWN button 20 → UP button Domoticz example: ID=2301.6,IN_TWINBUTTON to configure the port as double pushbutton switch OFF/DOWN/UP. |
| IN_COUNTER | Used to count pulses, max 16 pulses/second (57kW max using 1000pulses/kWh meter, or 28kW max using 2000pulses/kWh meter). This solution is perfect to count energy, gas, water, ...If TYPENAME=kWh is also specified in Description, a device with both energy and power will be created. Other options that can be set for this kind of device is OPPOSITE=dev to set the device counting energy in the opposite direction (import vs export), and DIVIDER=nnnn where nnnn is the number of pulses/kWh (default 1000, but can be 1666, 2000 or any reasonable value). Domoticz example: ID=2301.6,IN_COUNTER,typename=kWh,DIVIDER=1666,OPPOSITE=99 to configure the port as a energy meter (kWh), incremented every time one or more pulses are received; it goes to 0W when device with Unit=99 send one or more pulses. |
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| 256+Port#-1 | 13 | DISTANCE | Used to connect the port to a ultrasonic distance sensor like JSN-SR04T, to get the distance in millimeters. DomBus modules support more than one distance sensor, with the trigger inputs connected together to a specific port. Each module has an echo output that should be connected to an input port of the module: 1 port for each module. Both trigger and echo ports should be configured as DISTANCE. Domoticz example: ID=1202.1,DISTANCE to configure the port as DISTANCE sensor. More information in the application notes and FAQ. |
| A | For analog and distance sensors: used to compute the real value using the formula REAL_VALUE=A * VALUE_FROM_DOMBUS + B. Domoticz example: ID=2301.6,IN_ANALOG,A=0.00123,B=-10 to set port as analog input, and get an output value as 0.00123*VALUE-10 where VALUE=0-65535 corresponding to 0V-3.3V. |
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| B | For analog and distance sensors: used to compute the real value using the formula REAL_VALUE=A * VALUE_FROM_DOMBUS + B For temperature, used to calibrate the value using the formula REAL_TEMPERATURE=MEASURED_TEMPERATURE + B Domoticz example: ID=0101.3,DISTANCE,A=-0.1,B=165 to set the analog/distance port to get an output value computed as 165-0.1*VALUE. |
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| CAL | Used to calibrate the temperature and relative humidity sensors inside the DomBusTH module CAL=0 remove any calibration value. CAL=0.2 increase the temperature or humidity value by 0.2. CAL=-0.2 reduce the temperature and humidity value by 0.2 The calibration value is stored into non-volatile memory. Domoticz example: ID=5101.b,HUMIDITY,CAL=-2 to calibrate the sensor to get outputValue=measuredValue-2 |
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| FUNCTION | For analog input with internal 10k pullup (I/Os that can be configured as IN_TWINBUTTON) connected to a NTC thermistor, to convert the read analog value to a temperature. Supported types: FUNCTION=3950 for NTC with Bcoeff=3950 Example: IN_ANALOG,FUNCTION=3950,B=-0.3 to use 3950 type NTC 10k@25°C, and calibrate offset -0.3°C. First configure device as IN_ANALOG and then as IN_ANALOG,FUNCTION=3950 As FUNCTION parameter enable a conversion performed by the domotic controller (not inside the DomBus module), DCMD(Value:min:max) command can be added but min and max value should be the analog values in the range 0 (corresponding to input at 0V) and 65535 (corresponding to 3.3V) Domoticz example: ID=2301.6,IN_ANALOG,FUNCTION=3950 to set port as a NTC temperature sensor. |
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| DIVIDER | Used with IN_COUNTER ports to set how many pulses per unit of measure. For example, using energy meter with 2000 pulses/kWh, the option DIVIDER=2000 should be set; in case of water meter with 20000 pulses/m³, DIVIDER=20000 should be set. Domoticz example: ID=2301.6,IN_COUNTER,DIVIDER=1000 to get outputValue incremented every 1000 pulses. |
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| TYPENAME | Option to force the creation of a the specified Domoticz. For example, IN_COUNTER,TYPENAME=kWh to create a energy/power meter instead of a normal incremental counter, or IN_ANALOG,TYPENAME=Temperature,A=0.123,B=-50 to get an analog input that return a temperature using the linear equation Temperature=A*x+B where x is the analog value read Domoticz example: ID=2301.6,IN_COUNTER,TYPENAME=kWh to create a device type kWh. |
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| OPPOSITE | Used for kWh devices, measuring electric power and energy. Suppose to have a PowerMeter Import device, with Unit=98 (see Setup → Devices), measuring the power/energy from grid, and PowerMeter Export, with Unit=99, measuring the power/energy produced and fed to the grid. If these devices are connected to the pulse output of an energy meter, when a pulse is received from the Import device it means that exported power is 0, and vice-versa. This parameter is used to set what is the Unit number associated to the opposite counter. So, PowerMeter Import description must have IN_COUNTER,TYPENAME=kWh,OPPOSITE=99 and PowerMeter Export description IN_COUNTER,TYPENAME=kWh,OPPOSITE=98 Domoticz example: ID=2301.6,IN_COUNTER,TYPENAME=kWh,OPPOSITE=123 to get a energy meter with power goes to 0W when device with Unit=123 transmits a pulse. |
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| ADDR | EVSE: used to set the Modbus address of a DDS238-2 ZN/S (or DTS238-x ZN/S) energy meter. By default DDS238 has address=1 and baud rate 9600. Setting ADDR=2 to set the Modbus to the specified value. On DomBusEVSE module, address 2 is used to measure charging power/energy, and address 3 to measure grid power/energy. Valid range from 2 to 5. This parameter can be set only for the M1 Addr and Power Factor devices (EV PF, M3 PF, M4 PF, M5 PF) to change the Modbus address of energy meters that have address in the 1-5 range to another value) Domoticz example: ID=ffe3.d,CUSTOM,TypeName=Text,ADDR=2 to set Modbus address of the energy meter to 2 In case you want to change the Modbus slave address manually, it's a little complicated because DDS238 / DTS238 use the function code 0x10 to change a single register, so it cannot be done by mbpoll software. Below some example: echo -en '\x04\x10\x00\x15\x00\x01\x02\x02\x01\x5b\x65' >/dev/ttyUSB0 to change from address=4 to address=2 where the first byte corresponds to the current slave address, the 5st byte to the new slave address, and the last two bytes are the Modbus 16bit CRC (frame integrity check) calculated by writing the first 6 hex bytes to a Modbus CRC calculator, click on AnalyzeDataHex and check the CRC-16 (Modbus) Big Endian field. |
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| EVMAXCURRENT | EVSE: set the max charging current, that normally is limited by the cable used to connect the vehicle to the charging station. Valid range from 6 to 36, default value is 16 Ampere. This parameter can be set only for the device named EV Mode Domoticz example: ID=e301.4,EVMAXCURRENT=32 to set the max current (limited by EV cable and wirings) |
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| EVMAXPOWER | EVSE: maximum power that can be drained from the grid without any time limit (available power). Valid range from 1000 to 25000, default value 3300 Watt. This parameter can be set only for the device named EV Mode Domoticz example: ID=e301.4,EVMAXCURRENT=32,EVMAXPOWER=6600 to set the max contractual power from grid. |
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| EVMAXPOWER2 | EVSE: the highest power that can be drained from the grid, but only for a limited time. Valid range from 1000 to 25000, default value 0 (disabled). This parameter can be set only for the device named EV Mode Domoticz example: ID=e301.4,EVMAXCURRENT=32,EVMAXPOWER=6600,EVMAXPOWER2=7620 to set the absolutely max power that must never be exceeded. |
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| EVMAXPOWERTIME | EVSE: time in second to charge the electric vehicle using EVMAXPOWER Watt from grid, before increasing power to EVMAXPOWER2. Valid range from 60 to 43200 seconds, default value 0 (disabled). This parameter can be set only for the device named EV Mode Domoticz example: ID=e301.4,EVMAXCURRENT=32,EVMAXPOWER=6600,EVMAXPOWER2=7620,EVMAXPOWERTIME=1800,EVMAXPOWERTIME2=1800 to set time that EVSE module can keep the MAXPOWER and MAXPOWER2 |
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| EVMAXPOWERTIME2 | EVSE: time in second to charge the electric vehicle using EVMAXPOWER2 Watt from grid, before decreasing power to EVMAXPOWER. Valid range from 60 to 43200 seconds, default value 0 (disabled). This parameter can be set only for the device named EV Mode Domoticz example: ID=e301.4,EVMAXCURRENT=32,EVMAXPOWER=6600,EVMAXPOWER2=7620,EVMAXPOWERTIME=1800,EVMAXPOWERTIME2=1800 to set time that EVSE module can keep the MAXPOWER and MAXPOWER2 |
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| EVSTARTPOWER | EVSE: minimum available power to start charging: the minimum current is 6A, but usually the On-Board Charger charges less current than what is set, so maybe 900W is sufficient. Please note that charging at a low current lead to a poor efficiency (e.g. 30% power loss). Valid range above 800, default value 1200 Watt. This parameter can be set only for the device named EV Mode Domoticz example: ID=e301.4,EVMAXCURRENT=32,EVMAXPOWER=6600,EVSTARTPOWER=1500 to start charging only when at least 1500W are available |
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| EVSTOPTIME | EVSE: time in seconds after which the charging process is stopped if the available power is less than what is drained by the car with the minimum current (6A). This parameter is used to prevent that, expecially in SOLAR mode, the charging is ended if no power is available for a short time. Valid range from 5 to 600, default is 90 seconds. Time is internally reduced /5 in case that imported power from grid exceed the MAXPOWER parameter, to prevent disconnections. This parameter can be set only for the device named EV Mode Domoticz example: ID=e301.4,EVMAXCURRENT=32,EVMAXPOWER=6600,EVSTARTPOWER=1500,EVSTOPTIME=150 to stop charging after 150s with no enough power available. |
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| EVAUTOSTART | EVSE: can be set to 0 or 1. 0 means that this function is disabled. 1 means that this function is enabled, and permit to restart automatically the last charging mode when the vehicle is plugged again to the wallbox. Default value is 1. This parameter can be set only for the device named EV Mode Domoticz example: ID=e301.4,EVMAXCURRENT=32,EVMAXPOWER=6600,EVSTARTPOWER=1500,EVSTOPTIME=150,EVAUTOSTART=1 to start charging automatically when the vehicle is plugged. |
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| EVWAITTIME | EVSE: time to wait, in seconds, before updating the EV charge current again. By default this time is set in 7 seconds, because the SAE J1772 and IEC Standards state that On Board Charger have to adjust the power according to the value set by EVSE within 6 seconds. In case that an external grid power meter is used, with a long refresh time (more than 6 seconds), this parameter have to be set to the grid power refresh time + 1 or 2 seconds (to cover domotic controller delays). This parameter can be set only for the device named EV Mode Domoticz example: ID=e301.4,EVMAXCURRENT=32,EVMAXPOWER=6600,EVSTARTPOWER=1500,EVSTOPTIME=150,EVAUTOSTART=1,EVWAITTIME=12 to update charging current only after 12s since last update. | ||
| EVMETERTYPE | EVSE: type of energy meter installed. 0=DDS238 ZN/S (for single phase power supply: default type). 1=DTS238 ZN/S (for three-phase power supply): set to 1 in case of three-phase power supply, even if energy meter is directly controlled by the home automation system. Domoticz example: ID=e301.4,EVMAXCURRENT=32,EVMAXPOWER=6600,EVSTARTPOWER=1500,EVSTOPTIME=150,EVAUTOSTART=1,EVWAITTIME=12,EVMETERTYPE=1 for three-phase EV charging station. |
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| DISABLE | Used to disable one or more ports: it can be usedful with large buses with more than 255 ports (devices), because Domoticz has a limit of max 255 devices for each bus. In this case it's possible to disable unused module ports by writing, in the Description of port 1, the list of disabled ports separated by colon, for example DISABLE=2:5:6:7:11 to disable ports 2,5,6,7,11:16 (11 corresponds with port .b in hex and 16 with port .10 in hex) of the current module. Port 1 can be never disabled. To enable a previosly disabled port, just edit the port 1 description for that module, removing the port from the list of DISABLE command: that port will be enabled again in 60 seconds (wait for 1 minute and reload the Domoticz panel). Domoticz example: ID=2301.1,OUT_RELAY_LP,DISABLE=8:9:10 to disable ports 8,9,10. |
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| DCMD | Dombus Command: through this keyword it's possible to set a command to send to the same or another module, when an event occurs. In this way, when an event occurs, the module send a command to a dombus module to execute an operation, and this work without the need of a Domoticz controller and without the need to configure Domoticz to manage this kind of actions. See the DCMD section below. Domoticz example: ID=e301.1,OUT_DIGITAL,DCMD(On)=3101.4:On,DCMD(Off)=3101.4:Off,DCMD(On)=0.12:On,DCMD(Off)=0.12:Off to enable a relay on DomBus module with hwaddr=3101 when charging is ON, and also enabling a scene on Domoticz during charging. |
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| DESCR | This is used in Domoticz to add a description or comment to the device. Please note that the comment cannot contain the comma character "," because commas are used to separate commands. For example the Domoticz description field of a ANALOG port can be something like: 12.7,IN_ANALOG,A=0.000553902,DESCR=description of the analog port without any comma; A is the conversion factor from 16bit value to voltage (36.3V max) |
DCMD commands
This is an experimental function, undergoing testing and development, available on all DomBus modules, expept DomBus1
For each port it's possible to configure, through the Domoticz Description field, one or more DCMD commands.
DCMD is a command that is sent to the module itself or to another DomBus module, in response to an event, and more DCMD commands can be specified for the same event and port.
Also it's possible to send DCMD command to the domotica controller to activate, deactivate or toggle a scene/group; to get this feature please assure that:
- 127.0.0.1 was added to Domoticz → Setup → Settings → Trusted Networks field
- if Domoticz www port is different from 8080, manually replace 8080 with the used port in the plugins/CreasolDomBus/CreasolDomBusProtocol.py file:
JSONURL = "http://127.0.0.1:8080/json.htm"
The syntax is DCMD(Event:ValueLow:ValueHigh)=ModuleAddress.ModulePort:Command:Value
where ValueLow, ValueHigh, Value are optional parameters.
When ModuleAddress corresponds to the same module that we're editing, the command is executed locally, by the same module.
When ModuleAddress corresponds to another Dombus module, the command is sent by bus to that module. When ModuleAddress is 0, the command is sent to the controller to activate the scene/group with idx=ModulePort : please note that ModulePort should be in hex format, so if ModulePort=11 the scene/group with idx=17 will be activated.
| Event | Description | Example |
|---|---|---|
| OFF | This even occurs when input goes OFF | DCMD(OFF)=13.1:OFF When input goes off, turns OFF also port 1 of module 13 |
| ON | This even occurs when input goes ON |
DCMD(ON)=13.2:ON:90s |
| PULSE | Input is pulsed ON for less than 0.5s | DCMD(Pulse)=13.3:TOGGLE When input is pulsed shortly, send command to module 13 port 3 to toggle it's output OFF->ON or vice versa |
| PULSE1 | Input is pulsed ON for about 1s |
DCMD(Pulse1)=13.3:ON |
| PULSE2 | Input is pulsed ON for about 2s |
DCMD(Pulse2)=13.3:OFF |
| PULSE4 | Input is pulsed ON for about 4s |
DCMD(Pulse4)=13.4:ON:2h |
| DIMMER | ||
| VALUE | Sensor value is ≥ ValueLow and < ValueHigh Command is repeated every 30s if the comparison matches. |
DCMD(Value:0:20.5)=13.5:ON DCMD(Value:0:12.2)=31.7:ON DCMD(Value:0:100)=31.8:OFF |
| Command | Description | Example |
|---|---|---|
| OFF | Turns output OFF. If the optional Value is specified, output will be OFF for the specified time, then returns ON | |
| ON | Turns output ON. If the optional Value is specified, output will be ON for the specified time, then returns OFF | |
| TOGGLE | Change state to the selected output. If the optional Value is specified, wait the specified time before toggling output | |
| DIMMER |
| Command | Description | Example |
|---|---|---|
| number | A number without any suffix should be multiplied by 31.25ms (seconds/32) | 1=31.25ms 3=93.75ms 16=500ms |
| numberS | Number of seconds, from 1 to 3600 |
1s=1 second |
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numberM |
Number of minutes, from 1 to 1440 | 1m=1 minute 10m=10 minutes 180m=3 hours |
| numberH | Number of hours, from 1 to 43824 | 1h=1 hour 6h= 6 hours 72h=3 days |
| numberD | Number of days, from 1 to 1826 |
1d=1 day |
Example 1: configure a pushbutton switch to have 3 functions
short pulse → toggle ON/OFF light1 second pulse → enable ventilation for 30s
2 seconds pulse → disable ventilation
This 3 events can be configured writing in the description of the pushbutton switch:
DCMD(Pulse)=0101.1:TOGGLE, (with a short pulse, toggle port 1 of module 0x0101)
DCMD(Pulse1)=0101.2:ON:30m, (with 1 second pulse → turn on port 2 of 0x0101 for 30 minutes)
DCMD(Pulse2)=0101.2:OFF, (with 2 seconds long pulse, turn OFF the port 2 of 0x0101)
The Description field for that switch will be
IN_DIGITAL,INVERTED,
DCMD(Pulse)=0101.1:TOGGLE,
DCMD(Pulse1)=0101.2:ON:30m,
DCMD(Pulse2)=0101.2:OFF
Example 2: configure a pushbutton switch to trigger 2 scenes/groups
short pulse → toggle ON/OFF the group of light with idx=12 seconds pulse → activate the scene with idx=2 that switch off lights/loads and activate alarm system (useful when leaving the house)
This 3 events can be configured writing in the description of the pushbutton switch:
DCMD(Pulse)=0.1:TOGGLE, (with a short pulse, toggle Domoticz group with idx=1
DCMD(Pulse2)=0.2:ON, (with 2 second pulse → activate the scene with idx=2 that switch off everything and activate the alarm system
The Description field for that switch will be
IN_DIGITAL,INVERTED, DCMD(Pulse)=0.1:Toggle, DCMD(Pulse2)=0.2:On
Example 3: temperature sensor that enable/disable electric heater and valve
In the description field of the temperature sensor we'll write
DCMD(Value:0:20.5)=0101.3:ON, (if temperature between 0 and 20.5°C, turns ON heater on output 3 of module 0x0101)
DCMD(Value:0:20.5)=0102.1:ON, (if temperature between 0 and 20.5°C, turns ON valve output 1 of module 0x0102)
DCMD(Value:20.8:50)=0101.3:OFF (turn OFF heater when temperature above 20.8°C)
DCMD(Value:20.8:50)=0102.1:OFF (turn OFF valve when temperature above 20.8°C)
Domoticz temperature sensor Description will be:
TEMPERATURE,
DCMD(Value:0:20.5)=0101.3:ON,
DCMD(Value:0:20.5)=0102.1:ON,
DCMD(Value:20.8:50)=0101.3:OFF,
DCMD(Value:20.8:50)=0102.1:OFF
Example 4: configuring touch sensor of DomBusTH to activate Domoticz scenes/groups with a buzzer feedback
A piezo buzzer (without oscillator) should be connected to IN3 and IN4, and IN3 should be configured as OUT_BUZZER.
Toggle ON/OFF group with idx=17 (0x11 in hex) with a short pulse, less than 0.5s: DCMD(Pulse)=0.11:Toggle
Create a short 500ms buzzer feedback...module address is 5101 and IN3 port is 5: DCMD(Pulse)=5101.5:On:2 where 2=2*250ms and can be increased up to 9*250ms. Then, specifying 10, 20, 30, and other multiple of 10, instead of emitting a short or long beep the buzzer produces N beeps. For example, if value is 20, 2 beeps are emitted, followed by 4s of pause, then other 2 beeps and so on.
Activate the scene with idx=16 (0x10 in hex) when the touch sensor is ON for 2s: DCMD(Pulse2)=0.10:On
In this case, also transmits a long buzzer alert, 1.5s: DCMD(Pulse2)=5101.5:On:6
Installation
Using RS485 specific cables it's possible to get almost 1km linear bus with several devices attached. Alternatively, it's possible to use 2 twisted pairs of cheap Cat6 UTP or STP cable, one twisted pair for data (A and B) and one for 12-24V power supply. Ideally, all devices should be connected using a linear bus topology, to get the lowest reflection/noise, and connect 100-150 Ohm resistor on the two ends, as illustrated in the Fig. 2. In practice, this is not important for common buildings.
At Raspberry/PC side, it's possible to use a cheap USB-RS485 adapter, if a serial port with RS485 driver is not already available.
Using DomBus modules it's possible to:
- avoid RF pollution
- no need to periodically change batteries on sensors/actuators
- using a UPS or 13.6V power supply with backup battery, it's possible to get a building automation system that works also in case of power outage
- very very low power consumption
Writing a microSD card with a fresh Raspbian + Domoticz distribution
Click here if you need to write a microSD card with a clean updated Raspbian+Domoticz image optimized to extend SD life (minimizing writings), and with some addons (firewall, backup, libraries).
Adding DomBus plugin to Domoticz
Linux version
This procedure is not needed in case of a new Domoticz installation writing the SD as written above.
If Domoticz does not already include the DomBus plugin, type the following commands (from Linux root shell: type sudo su - to become root):
#install git, if not already installed
which git
if [ $? -ne 0 ]; then sudo apt install git; fi
#change to the domoticz directory / plugins
cd /home/pi/domoticz/plugins
#fetch the Python Plugin Manager (that can be used to install/upgrade other plugins, including Creasol DomBus)
git clone https://github.com/ycahome/pp-manager
#fetch Creasol Plugin
git clone https://github.com/CreasolTech/CreasolDomBus
#restart Domoticz daemon
service domoticz restartWindows version
FIrst python should be installed, following the instructions at www.domoticz.com/wiki/Using_Python_plugins.Then you should create a plugins folder inside the domoticz directory, within another subfolder named CreasolDomBus: in this subfolder, copy files python.py and CreasolDomBusProtocol.py that you find in the GitHub repository github.com/CreasolTech/CreasolDomBus
Domoticz configuration
After plugins installation and Domoticz restart, it's possible to add the Creasol DomBus hardware (Setup->Hardware , add new "dombus" hardware type "Creasol DomBus" and specify the serial device, normally /dev/ttyUSB0) and connect the DomBus device to the RS485 bus.
DomBus module is factory programmed with a default address indicated above, and only one port will be automatically added to the Switches panel of Domoticz. Enter the Switches panel, find the new device with the DomBus default address, click on Edit and add in the description ,HWADDR=0x0001 to set the new address to 0001, or specify another address of your choice. Reload the Switches panel to see all input/output/led ports of DomBusTH active.
With Domoticz, each DomBus port can be configured via the Domoticz device description: for example a port IN_DIGITAL normally is On when it's left unconnected, and Off when it's shorted to GND, but it's possible to invert this function specifying in the device description the parameter INVERTED, separated by a comma (,): IN_DIGITAL,INVERTED . Relay outputs can be configured writing in the description field OUT_DIGITAL or OUT_RELAY_LP: in the latter case, relay are internally managed to assure a low power consumption.
Please check the sections Ports capabilities and Ports parameters.
Ports that are not used can be disabled in Domoticz Setup → Devices clicking on the blue arrow of each useless port (device), but in case of a bus with almost 255 ports, it's suggested to disable the unused ports by using the DISABLE command:
1. suppose that DomBus module 0x0001 has ports 3,4,5,6,8 not used
2. in Domoticz Switches panel select port1 of that module ([0001.1] RL1)
3. click on Edit, and add in the Description field DISABLE=3:4:5:6:8 and click on Save.
In this way, the selected ports will be disabled and removed from the Devices list. With this solution it's possible to add more DomBus modules to the same bus, with up to 255 enabled ports.
In large buildings, it's a good practice to have more than one bus, to divide floors or areas.
Updating DomBus plugin on Domoticz
If the Creasol DomBus plugin has been installed in Domoticz using the Python Plugin Manager, it's possible to update the plugin to the latest version by:- Go to Setup → Hardware → PP-Manager (name of the python plugin manager)
- Assure the PP-Manager is enabled
- Pluging to install: select Creasol DomBus
- Auto Update: choose Selected
- Click on Update button
Alternatively, it's possible to download the plugin from github repository, using one of the following ways:
- Linux platform, with DomBus plugin installed manually
- cd DOMOTICZ_HOME/plugins (e.g. cd /home/pi/domoticz/plugins)
git clone https://github.com/CreasolTech/CreasolDomBus.git - Linux platform, with DomBus plugin installed using git
- cd DOMOTICZ_HOME/plugins/creasolDomBus (e.g. cd /home/pi/domoticz/plugins/CreasolDomBus)
git pull - Windows platform
- Files should be downloaded from the github repository https://github.com/CreasolTech/CreasolDomBus by using git program or www browser, then placed in the DOMOTICZ_HOME/plugin/CreasolDomBus directory
Installing CreasolDomBus Home Assistant custom component
*** Since 2021-08 the CreasolDomBus component no longer works: please use DomBus modules with Modbus firmware and standard Modbus integration, instead!! *** The integration code is available at https://github.com/CreasolTech/home-assistant-creasol-dombus and can be installed by HACS component: it's designed to work with DomBus modules using DomBus proprietary protocol.Alternatively, the following commands should be executed in the linux shell: for people using Windows, use git UI to download the custom component and place it in the right directory.
cd /tmp
git clone https://github.com/CreasolTech/home-assistant-creasol-dombus.git
cp -a home-assistant-creasol-dombus/custom_components HADIR/config/
ha core restart
After reboot of Home-Assistant, this integration can be added through the Configuration -> Integrations -> + ADD INTEGRATION and selecting Creasol DomBus integration.
FAQ about DomBus products
First, please note that:- DomBus modules are available with both DomBus and Modbus protocol firmwares, so the best one for your needs should be chosen. Below in the FAQ some information about the two protocols
- You can connect up to 20-30 modules per bus connected to the main controller by a simple USB/RS485 adapter.
- It's good to make different buses on large buildings with several sensors and actuators, for example a bus for the ground floor, one for the second floor, ... Any bus is connected to a RS485 port/adaptor and need a DomBus plugin for that serial port, so in the Domoticz Setup→Hardware, one Creasol DomBus line for each serial port.
- DomBus modules are factory programmed with a certain address, for example 0xff12 for DomBus12, 0xff23 for DomBus23, and so on. As each device connected to the bus MUST have a unique address, add only one module to the bus then program its address using the command HWADDR=0x0001, then connect another DomBus module and program its address to 0x0002 and so on. Address can be chosen to identify floor and room, for example 0x1023 to identify floor 1, room 2, module 3 in that room.
- On Domoticz the max number of managed ports is 256, and you can use the DISABLE command to disable ports that are not used in case that 256 ports are not enough.
Install the CreasolDomBus plugin (available on Python Plugin Manager: see section above).
Connect a DomBus module to the RS485 bus and check on the Switching panel: you'll find a new device in the last position.
Click on Edit and add ,HWADDR=0x0001 to set the new hardware address for the module (address must be unique!): reload the Switches/Temperature/Utility panels and you'll find new devices corresponding to each module port.
Each device (module port) can be configured by using the Description field, so you don't need to any web UI to configure it, and in case that a module will be damaged, just replace with a new module, connect it to the bus, program it with the same hardware address, then for each port click on Edit button and Save button to restore previous configuration.
- What protocol should I choose? Modbus vs DomBus protocols
It's not possible to change firmware by ourself, but it's always possible in the future to ask for a factory reprogramming with the desired protocol.
Modbus protocol is standard and works with almost every home automation systems: Home Assistant, Node-RED, OpenHAB, ...
DomBus is proprietary, and works only with Domoticz home automation system.
Modbus is a master/slave polling protocol, so the controller have to poll (every 100ms, 1s, or more) to know the input/sensor status. DomBus is a multi-master protocol, where the module can initiate a communication with the controller when an event occurred (input or sensor change), so the bus will be used only to exchange new data (with a very short latency, usually less than 100ms) or periodic data (modules periodically transmit the input/output status to the controller.
Modbus module is slave. DomBus modules are also able to send commands to other DomBus modules, like KNX ; for example it's possible to program DomBus module A to sends a command to DomBus module B when a button is pushed quickly (to to turn ON the light, for example), and activate a scene if the button is pushed for example for 2 seconds (to turn OFF all lights, for example). This kind of commands are called DCMD, and permit to add automations easily and get them working even in case that the domotica controller is down to get a reliable home automation network; this feature is not available on DomBus protocol.
- How can I change address of DomBusTH device?
Click on the Edit button of that switch and add the following text to its description: ,HWADDR=0x0001 (don't forget the comma used to separate each parameter) to set the new address to 0001, ot another not-used value.
DomBus device will be set to the specified address, then you'll find in the Switches panel all ports with the selected address.
At this point you can add another new dombus device, and change its address in the same way.
- DomBusTH: how to mount and fix it?
Please keep in mind that:
- sensor needs that air circulate easily, but the polymers inside it can be damaged by direct sun light and dust: for this reason the hole must be centered with the LEDs inside the board, and sensor must stay below the hole!
- when LEDs are steady ON: for this reason they must stay above the sensor, and air must circulate easily from bottom to top
- don't cover the programming pads, so it will be possible to further upgrade the firmware without removing the board from the plastic cover
- DomBusTH: temperature and humidity sensor stopped updating
As DomBus modules supports OUT_FLASH feature, if possible use this function to notify a status: setting value to 10 the LED will emit 1 short pulse followed by 2 seconds of blank time. Setting to 20 will emit 2 short pulses, and so on. In this way the LEDs will not heat and temperature and humidity sensors will transmit data regularly.
- DomBusTH: how to do a factory reset?
Anyway, it's possible to do a factory reset in this way:
- Disconnect the device
- For firmware version before 2021-11-11: Solder the PCB jumper a to force IN4 in low impedance (150 Ohm resistor)
- Connect together IN1, IN2, IN3, IN4 wires
- Connect the device to the power supply: you can see a red flash 1000ms long, that notify that configuration was restored to the factory default.
- For firmware version before 2021-11-11: If IN4 is used as input, remove the solder bump on PCB jumper a
- Why buzzer does not work?
For example it's possible to connect a piezo buzzer to DomBusTH IN3 and IN4 I/Os; with the solder iron tip make a short on the I/O PCB jumpers (marked as "a" and "b") corresponding to IN3 and IN4 to reduce the output resistance. Configure IN3 device as OUT_BUZZER (don't care about IN4).
If the buzzer does not work, maybe the buzzer has an oscillator inside: in this case connect the buzzer to a 12V source and if you'll hear a "TIC", it has not the oscillator inside, while if you hear a sound, the buzzer has the oscillator and can be connected to a relay or (even better) to an open-drain output: in the latter case, it can be connected between 12V and OUT1 (or OUT2); configure OUT1 as OUT_DIGITAL. To get the buzzer sending 1 or more beeps, following by a 4 seconds pause, set the Domoticz device as Selector Switch, enabling level 10, 20, 30, 40, ... corresponding to 1 beep + pause, 2 beeps + pause, and so on: the buzzer oscillator circuit must have a fast response to work in this way, because the supply time is very short, less than 100ms.
- 2 or more modules with the same address
Example: module A has address 0x0002, module B has address 0x0002 instead of 0x0003, module C has address 0x0002 instead of 0x0004.
Disconnect module A and B (only C is supplied), then select any device with address 0x0002 (for example device with ID=2.1) and write in the Description field HWADDR=0x0004 to set the right address for module C.
The connect module B, select a device with address 0x0002 (device with ID=2.1) and write HWADDR=0x0003 in the description, to set the new address to module B.
Then connect module A that has the right address.
- How to use a RS485/NET or ModbusTCP gateway?
- How many DomBus modules can I connect to a bus?
It's possible to have more than one bus, each bus associated to one RS485 port: for example for large buildings or if it's needed to differentiate the buses to increase system security, it's possible to use many RS485/USB adapters connected to Domoticz, one for each bus.
- How to split a bus in 2 buses in Domoticz?
- split the bus, connecting the second bus to another RS485/USB adapter (better to use an adapter from another manufacturer, to avoid Linux exchanging the two serial ports)
- Setup→Hardware and create another hardware using Creasol Dombus plugin, specifying the new serial port
- Setup→Devices to list all dombus devices: sort by ID. You can see that all devices in the new bus are already active with the same configuration of the previous bus
- For each device moved to the second bus, click Edit→Replace to replace it with the new device in the second bus (you can find it with the default name): in this way device is moved to the second bus mantaining the state history (On/Off history, temperature history, Watt/Energy history, ....) and room plan position.
- How to identify a RS485/USB adapter when more than one are connected
- find the devpath for the bus #1, corresponding with ttyUSB0 in this example, running the command udevadm info -a /dev/ttyUSB0|egrep 'ATTRS.(idVendor|idProduct|devpath)'|head -n3
Assuming that result is
ATTRS{devpath}=="1.5" ATTRS{idProduct}=="7523" ATTRS{idVendor}=="1a86" - create/edit the file /etc/udev/rules.d/99-serial-ports.rules adding the line
SUBSYSTEM=="tty", ATTRS{idVendor}=="1a86", ATTRS{idProduct}=="7523", ATTRS{devpath}=="1.5", SYMLINK+="ttyUSBdombus1"to set that the USB/RS485 adapter plugged to the USB port 1.5 should be named /dev/ttyUSBdombus1 - Make a symlink using the command ln -s /dev/ttyUSB0 /dev/ttyUSBdombus1
This is needed now because the system is running with the adapter already plugged.
When the computer will reboot, the USB-RS485 serial adapter plugged to the port 1.5 will assume the device /dev/ttyUSBdombus1 - Enter the Domoticz UI, Setup → Hardware, select the dombus1 hardware and change serial port from /dev/ttyUSB0 to /dev/ttyUSBdombus1, then click on Update button.
- Repeat the steps above for the next RS485/USB serial adapters, to set the device to ttyUSBdombus2, ....
- All DomBus devices have been duplicated!
Most probably you have selected the DomBus plugin in Setup→Hardware , and clicked to the Add button instead of Update button.
Now you have to select the duplicated DomBus plugin, disable it, click Update, then select it again and click on Delete button.
- I have many USB-serial adapters
- Why there is a long delay between pushing a button and get light/output on?
- bus is not terminated by resistors: RS485 is a balanced bus, and need two resistors 100-150 ohm connected to the two opposite end of the bus.
RESISTOR --- Module1 --- Module 2 --- Raspberry --- ..... --- Module 20 --- Module 21 --- RESISTOR between A and B
Some DomBus modules have a PCB jumper that can be shorted (using a solder iron) to enable the RS485 resistor already included in the module.
There must be exactly 2 resistors connected on the bus! - Latency can be caused by Domoticz being busy with other services. Disable hardware that is not used or not needed, like Python Plugin Manager that is known to cause longer latencies. Also, enable logging so you can check exactly what is the latency reason (Domoticz reading the Raspberry internal sensors/cpu usage/disk usage, for example).
- Update DomBus plugin to the last version: you can install/enable Python Plugin Manager, update all python plugins (including Creasol Dombus) and then disable it.
- DomBusEVSE does not work - Checklist
- Check that EVMaxcurrent is 16 or 32, corresponding to the max current supported by your EV cable
- Check accurately that EVSE GND terminal block is also connected to the Protection Earth of the building and PE of the EV cable
- Check that EVState is Disconnected when the vehicle is unplugged, and Connected when it's plugged
- Check that the vehicle battery State of Charge is less than charging limit (battery level < 80%, for example)
- Check that GridPower value is correct, indicating the grid power in Watt (negative if photovoltaic system is producing more than building usage)
- When EVSE is able to charge, and EVState is Connected (vehicle plugged), the EVSE sets EVCurrent to 6A sending PWM signal to the vehicle (green LED flashes 3 times). If the vehicle does not require charging (battery full?), after 16s the EVSE stops sending PWM signal (green LED flashing twice) for 16s, then retry sending PWM for another 16s (green LED flashing 3 times), and so on...
- When the vehicle requires charging and enough power is available, EVState goes to Charging state and the contactor is activated. The 230V contactor output (one line + neutral in case of three-phase) is also connected to the In AC EVSE terminal block, to get a feedback about mains power availability. In case that contactor does not activate or mains power supply is not connected to the contactor in the right way, EVState will be set to the Power Outage error.
- DomBusEVSE and DomBus34: 2 energy meters with same Modbus address
For example, if you have DomBusEVSE EV charging module with two energy meters that have the same Modbus Addr=2 (you can check the Addr parameter in the display), you need to change the Address of the grid energy meter (from 2 to 3) in this way:
- Disconnect EV energy meter from the bus
- Select Domoticz Utils panel, select EV PF device, and add in its description ",ADDR=3" (without doublequotes), then click on Save. The Grid energy meter (that had Modbus address=2) now will have Modbus address=3 , and refreshing the page you'll see new devices like Grid Energy
- Connect the EV energy meter again.
- DomBusEVSE: when the charging sessions starts and stops?
EVSTARTPOWER (default=1200) defines the minimum available power to start charging session (1200W).
EVSTOPTIME (default 900) is the time in seconds to wait before ending charging session in case that the grid power is greater than the value selected by EVMode
EVMAXPOWER (default 3300, have to be changed to the max contractual power) defines the max power that can be drained from the grid.
The charging session starts if EVMode is not Off and GridPower+EVSTARTPOWER < EVMode*EVMAXPOWER: for example, if EVMode=Solar, GridPower+EVSTARTPOWER<0 ⇒ GridPower < -EVSTARTPOWER or GridPower < -1200 .
The sessions ends if GridPower is greater than EVMode*EVMAXPOWER (e.g. 0 in solar mode, 0.25*EVMAXPOWER if EVMode=25%, ...) for more than EVSTOPTIME seconds.
In this way, charging continue with the minimum charging current (6A) in case of cloud, or oven ON or other intermittent consumption.
- DomBusEVSE and Domoticz: EV Energy device shows the right power, but energy is always at 0
Check the same for all power/energy devices for the EVSE module.
- DomBusEVSE: how to simulate that a vehicle is plugged, asking for charging or notifing an error?
- no load ⇒ vehicle not plugged, disconnected ⇒ CP voltage = 12V
- 2200÷2700 Ohm ⇒ vehicle plugged, no charging requested ⇒ CP voltage = 9V
- 820÷1000 Ohm ⇒ vehicle plugged and asking for charging ⇒ CP voltage = 6V: EVSE starts sending PWM signal (+/-6V) with a variable duty cycle to specify the max charging current that OBD can sink
- 330 Ohm ⇒ vehicle plugged and charging, asking for ventilation ⇒ CP voltage = 3V: this feature is not supported by standard electric vehicles
- 0 Ohm ⇒ error notification from vehicle ⇒ CP voltage = 0V, EVSE must disable mains power supply
Assure that EV Mode is not OFF and there is enough power to start charging session, Grid Power < EV Mode power - EVSTARTPOWER (for example, Grid Power < -1200W in Solar mode or Grid Power < 4800W if EV Mode = 100% and EVMAXPOWER=6000W, and then connect a 1500 Ohm resistor in parallel with the existing 2700 Ohm to simulate the vehicle request to start charging.
- Why DomBus device does not work?
2. Did you installed the Creasol DomBus plugin on Domoticz? If not, check the Configuration section above
3. If you open the Domoticz web panel, and enter Settings -> Hardware, can you find the Creasol DomBus protocol ? Did you enable it? If not, check the Configuration section above
4. When you connect the DomBus device to the RS485 bus, can you see a new device in the Domoticz Switches panel? if not, the device cannot communicate to Domoticz by RS485 serial bus. In this case, check that:
a) DomBus device is supplied by 12Vdc or similar voltage
b) RS485 bus is connected (A, B, GND) to Domoticz (Raspberry or other hw) through the USB/RS485 adapter or other RS485 adapter
c) Verify that the DomBus protocol on Domoticz is configured correctly (115200bps and right serial device), and that there are not 2 DomBus hardware with in Domoticz with the same serial port
- One DomBus module stopped working
a) Check that 12-24V is applied between Vbus (+) and GND (-)
b) Check that A and B data lines (RS485 bus) are connected: with a voltmeter it's possible to test the voltage between GND and A, and between GND and B: these voltage must be almost the same(100mW difference) and in the range 1÷(Vbus-1) Volt.
c) check for led activity on DomBus module: periodically it has to transmit data to the domotic controller. If the module has at least one input, toggle the input LOW and HIGH and check that led flashes (to indicate a transmission). If it flashes, the module works. Check that in the home automation system that input changes it's state: if it changes, the domotic controller receives correctly. If the module has no inputs (like DomBus31), turn off and on the power supply: after few seconds you should see red flashing.
c) Now check the domotic tranmissions: toggle a module output and check that, everytime you toggle that output from the domotic module, the DomBus led flashes (indicating the transmision of acknowledge: if it does not flash, maybe the RS485 driver is broken (chinese RS485-USB adapters are very weak: you should replace it or replace the MAX485 chip inside).
- Why current consumption is 0uA?
DomBus1: first version of DomBus1 was not protected against polarity inversion, and switching mode power supply circuitry break down in case of polarity inversion opening the circuit. If you have a solder iron, you can try DomBus1 connecting a 5Vdc power supply to +5V indicated by the red arrow, and GND terminal block. Click to see the picture!
DomBusTH: Check polarity: the first wire (black) is ground (0V) and the second wire (brown) V+ (normally, +12V). DomBusTH is protected against polarity inversion.
- How to add icons on smartphone to turn On/Off lights/loads, or enable/disable scenes/groups?
- How to send Telegram notification from a lua script in Domoticz?
-- script_time_example.lua : simple example script that write a message to Telegram channel/group if temperature is less than 5
commandArray={}
dofile "script/lua/globalvariables.lua" -- read a file with some variables, including Telegram API key and ChatID
dofile "script/lua/globalfunctions.lua" -- read a file with some functions
if (tonumber(otherdevices['Temp_outdoor']) < 5) then
telegramNotify("Low temperature: bring flowers inside") -- send message by Telegram
end
return commandArray
DomBus firmware ChangeLog
- 2024-07-10 02j2
Now it's easier to use the DCMD(PulseX) functions
DCMD(Pulse)=function activated when touch sensor is activated for less than 1s (before white led flashes)
DCMD(Pulse1)=function activated when touch sensor is activated for 1-1.9s (after 1 white led flash)
DCMD(Pulse2)=function activated when touch sensor is activated for 2-2.9s (after 2 white led flashes)
DCMD(Pulse3)=function activated when touch sensor is activated for 3-3.9s (after 3 white led flashes)
DCMD(Pulse4)=function activated when touch sensor is activated for 4-4.9s (after 4 white led flashes)
- 2024-05-15 02j1
- 2024-03-29 02i9
- 2024-02-29 02i7
EVSE module should be connected to 2 contactors (2P 40A): RL1 connected used to connect the Line (L1) to contactor1 coil and RL2; RL2 used to enable contactor2 coil together with RL1.
When RL2 is configured with EV3PSELECT option (Domoticz: write ,EV3PSELECT on Description field. Modbus: set Reg.513 to value=254), charging session works in this way
Single phase charging (to charge the vehicle in low power, useful in solar mode when available power is less than 3kW)
Stop charging (EVMode=Off), RL2 Off, EVMode=Solar or another value: only the contactor that feeds one Line and Neutral is enabled.
Three phase charging (to charge at higher power, up to 22kW)
Stop charging (EVMode=Off), RL2 On, EVMode=Solar or another value: both contactors will be activated together to enable all 3 Lines and Neutral.
- 2023-11-28
0 ⇒ use DDS238 (single phase)
1 ⇒ use DTS238 (three phase). Set to 1 in case of three phase power supply, even if no meter is connected to the 2nd bus of DomBusEVSE
- 2023-07-15 Rev02i2
DBTH: Added support for DISTANCE sensor (IO5, IO6, IO1,IO2,IO3 with trigger on IO4)
DB12: added support for DISTANCE (IO7 used for trigger)
Improved counter stability (IN_COUNTER ports)
- 2023-06-13 Rev02h4
DB37: added parameter 9000 to invert all digital inputs (IN1-IN12) when value is 1.
- 2023-04-07 Rev02h3
DB12: add support for Modbus protocol
OUT_BUZZER and OUT_FLASH: updated to get the following behaviour, when the argument is
0 ⇒ OFF
1 ⇒ solid ON
2 ⇒ ON for 250ms
3 ⇒ ON for 500ms
4 ⇒ ON for 750ms ...
9 ⇒ ON for 2000ms
10 ⇒ 1 beep/flash followed by 2s pause, forever
11 ⇒ 1 beep/flash followed by 2s pause, only once
12 ⇒ 1 beep/flash followed by 2s pause, only twice
13 ⇒ 1 beep/flash followed by 2s pause, 3 times ...
19 ⇒ 1 beep/flash followed by 2s pause, 9 times
20 ⇒ 2 beeps/flashes followed by 2s pause, forever
21 ⇒ 2 beeps/flashes followed by 2s pause, only once
22 ⇒ 2 beeps/flashes followed by 2s pause, only twice
and so on...
- 2023-03-07 Rev02h2
DBEVSE: Added a smart charging session using max power from electricity grid:
in Italy, if contractual power is 6kW, it's possible to drain 6kW+27% for max 90 minutes, then power must decrease below 6kW+10% for at least 90 minutes
MaxPower2 (e.g. 7600 Watt) #################### #########
MaxPower (e.g. 6600 Watt) #####################################################################
^ ^ ^ ^
Time start MaxPowerTime MaxPower2Time MaxPowerTime
HWADDR: added another checksum to prevent mistakes
OUT_FLASH: pause between led flashes has been reduced from 4s to 2s
DB31: added Modbus support
DB36: new device, 12 relays, tested with Modbus protocol
- 2022-11-16 Rev02g5
OUT_ANALOG_LP: increased frequency according to the modification above.
- 2022-11-04 Rev02g4
- 2022-10-22 Rev02g3
Added transmission of power (watt) without energy.
DBEVSE: added virtual device "Grid Power"
- 2022-09-26 Rev02g
Added support for MODBUS energy meter DDS238
Improved communication: limited length of ACK frames (only port and subcmd/arg1 in the payload); also, ACK are transmitted before CMD.
- 2022-02-07
COUNTER: periodically transmit status every 256 seconds, in case of no activity, to avoid bad graphs on Domoticz (graph should stay at zero, if no activity)
DomBusEVSE: new project
- 2021-12-02
- 2021-10-25
- 2021-10-19
- 2021-03-16
For example: PowerMeter_Import, with Unit=98. PowerMeter_Export, with Unit=99
On PowerMeter_Import description, add ,OPPOSITE=99, and in PowerMeter_Export description add ,OPPOSITE=98 : in this way when a pulse is received from the import device, the power on export device will be set to 0, and viceversa.
After powerOn, the module transmits its firmware version and module name, logged by Domoticz with priority INFO.
- 2020-12-28
Need help? join the DomBus channel on Telegram!
Esiste anche il Canale Telegram in Italiano DomBus_it!
Domoticz community, Domoticz Italia, Domoticz France, Domoticz Nederland, ... just search Domoticz on Facebook!
creDomBusEVSE
Reviews
C'est bon!
J'utilise HomeAssistant.
Très bien!
¡Perfecto para mi VW ID.4!
Utilizo este módulo con Home Assistant para recargar mi ID.4.
Funciona bien, muy inteligente
Je bent misschien ook geïnteresseerd in
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