Connecting Askoma Askoheat+ using the Modbus binding

Tutorials & Examples
, ,
1

Hello,

as I didn’t find a working openHAB configuration to connect an Askoheat+ flange heater I figured out how to define things and items and to read 2 values. I’m posting how all is currently defined in order to help others to save some time.

Things file:

Bridge modbus:tcp:askomatcp "Heizstab" @ "Keller" [ host="<host ip>", port=502, id=1 ] {
    Bridge poller AskInput "Heizstab Input-Register" @ "Keller" [ start=108, length=4, refresh=10000, type="input" ] {
        Thing data AskNotbetrieb "Heizstab Notbetrieb" @ "Keller" [ readStart="108.0", readValueType="uint8" ]
        Thing data AskLeistung "Heizstab akt. Leistung" @ "Keller" [ readStart="110", readValueType="uint16" ]
    }
}

Items file (current electrical load in kw + state of emergency operation);

Switch  AskNotbetrieb "Heizstab Notbetrieb [MAP(Askoma.map):%s]" <switch> { channel="modbus:data:askomatcp:AskInput:AskNotbetrieb:number" }
Number  AskLeistung "Heizstab akt. Leistung [%.0f kW]" <energy> { channel="modbus:data:askomatcp:AskInput:AskLeistung:number" }

And the mapping file to map the values 0=OFF + 255=ON (conf/transform/Askoma.map):

0=OFF
255=ON

And finally the part of the sitemap:

    Frame label="Heizstab" {
        Text item=AskLeistung label="Aktuelle Leistung"
        Switch item=AskNotbetrieb label="Notbetrieb"
    }

Good Luck :wink:
Reinhold