Update: 1 aufgrund der sehr freundlichen Hinweise wurden die Logs mit eingefügt.
Moin Freunde des Modbuses,
ich habe folgende Modbus RTU 4 Channel Karte: RS485 TTL Controller welche dann mit einem Eletechsup ET69C02 Modbus TCP fähig wird.
Über den ioBroker Adpater schaffe ich alle 4 Kanäle zu schalten, allerdings nur für das Relais 1 auch den Status abzufragen.
Habe mich zunächst mit ModBusTool von Github herangetastet. Es scheint, dass ich den Status der einzelnen Relais nur unter der Adresse 0 abfragen kann. Kann man hier auch schick sehen (mit read coils):

Leider bekomme ich das im Modbus Adapter nicht hin. Wie auch im ModbusTool bekomme ich einen Poll / error code 2 von der Platine das die diese abfrage verweigert, sobald ich pro Relais eine coil abfrage mache auf der jeweiligen Adresse.
Update (Log nachträglich eingefügt, da ich mittlerweile ein Platine mit 8 Relais dran habe sind hier mehr Coils als in den anderen Screenshots)
modbus.2 2025-08-24 14:31:59.990 info Disconnected from slave 10.8.2.14
modbus.2 2025-08-24 14:31:59.990 debug Closing client on purpose.
modbus.2 2025-08-24 14:31:58.992 debug Cleaning up request fifo.
modbus.2 2025-08-24 14:31:58.992 debug Clearing timeout of the current request.
modbus.2 2025-08-24 14:31:58.992 debug Socket closed with error
modbus.2 2025-08-24 14:31:58.990 warn [DevID_4] Poll error count: 1 code: {"err":"timeout","timeout":5000}
modbus.2 2025-08-24 14:31:58.989 error Client in error state.
modbus.2 2025-08-24 14:31:58.989 error Request timed out.
modbus.2 2025-08-24 14:31:58.989 warn Error: undefined
modbus.2 2025-08-24 14:31:53.988 debug [DevID_4/coils] Poll address 0 - 1 bits
modbus.2 2025-08-24 14:31:53.987 debug [DevID_4] Poll start ---------------------
modbus.2 2025-08-24 14:31:53.987 info Connected to slave 10.8.2.14
modbus.2 2025-08-24 14:31:53.872 debug Initialize Objects for holdingRegs: []
modbus.2 2025-08-24 14:31:53.872 debug Initialize Objects for inputRegs: []
modbus.2 2025-08-24 14:31:53.872 debug Add coils.4.7_Relais-4-8: {"_id":"coils.4.7_Relais-4-8","type":"state","common":{"name":"Relais-4-8","role":"switch","type":"boolean","read":false,"write":true,"def":false},"native":{"regType":"coils","address":7,"deviceId":4,"poll":false,"wp":false}}
modbus.2 2025-08-24 14:31:53.871 debug Add coils.4.6_Relais-4-7: {"_id":"coils.4.6_Relais-4-7","type":"state","common":{"name":"Relais-4-7","role":"switch","type":"boolean","read":false,"write":true,"def":false},"native":{"regType":"coils","address":6,"deviceId":4,"poll":false,"wp":false}}
modbus.2 2025-08-24 14:31:53.871 debug Add coils.4.5_Relais-4-6: {"_id":"coils.4.5_Relais-4-6","type":"state","common":{"name":"Relais-4-6","role":"switch","type":"boolean","read":false,"write":true,"def":false},"native":{"regType":"coils","address":5,"deviceId":4,"poll":false,"wp":false}}
modbus.2 2025-08-24 14:31:53.871 debug Add coils.4.4_Relais-4-5: {"_id":"coils.4.4_Relais-4-5","type":"state","common":{"name":"Relais-4-5","role":"switch","type":"boolean","read":false,"write":true,"def":false},"native":{"regType":"coils","address":4,"deviceId":4,"poll":false,"wp":false}}
modbus.2 2025-08-24 14:31:53.871 debug Add coils.4.3_Relais-4-4: {"_id":"coils.4.3_Relais-4-4","type":"state","common":{"name":"Relais-4-4","role":"switch","type":"boolean","read":false,"write":true,"def":false},"native":{"regType":"coils","address":3,"deviceId":4,"poll":false,"wp":false}}
modbus.2 2025-08-24 14:31:53.871 debug Add coils.4.2_Relais-4-3: {"_id":"coils.4.2_Relais-4-3","type":"state","common":{"name":"Relais-4-3","role":"switch","type":"boolean","read":false,"write":true,"def":false},"native":{"regType":"coils","address":2,"deviceId":4,"poll":false,"wp":false}}
modbus.2 2025-08-24 14:31:53.871 debug Add coils.4.1_Relais-4-2: {"_id":"coils.4.1_Relais-4-2","type":"state","common":{"name":"Relais-4-2","role":"switch","type":"boolean","read":false,"write":true,"def":false},"native":{"regType":"coils","address":1,"deviceId":4,"poll":false,"wp":false}}
modbus.2 2025-08-24 14:31:53.871 debug Add coils.4.0_Relais-4-1: {"_id":"coils.4.0_Relais-4-1","type":"state","common":{"name":"Relais-4-1","role":"switch","type":"boolean","read":true,"write":true,"def":false},"native":{"regType":"coils","address":0,"deviceId":4,"poll":true,"wp":false}}
modbus.2 2025-08-24 14:31:53.870 debug Initialize Objects for coils: [{"_address":0,"deviceId":4,"name":"Relais-4-1","description":"Relais-4-1","formula":"","role":"switch","room":"","poll":true,"wp":false,"cw":false,"isScale":false,"address":0,"id":"coils.4.0_Relais-4-1","len":1},{"_address":1,"deviceId":4,"name":"Relais-4-2","description":"Relais-4-2","formula":"","role":"switch","room":"","poll":false,"wp":false,"cw":false,"isScale":false,"address":1,"id":"coils.4.1_Relais-4-2"},{"_address":2,"deviceId":4,"name":"Relais-4-3","description":"Relais-4-3","formula":"","role":"switch","room":"","poll":false,"wp":false,"cw":false,"isScale":false,"address":2,"id":"coils.4.2_Relais-4-3"},{"_address":3,"deviceId":4,"name":"Relais-4-4","description":"Relais-4-4","formula":"","role":"switch","room":"","poll":false,"wp":false,"cw":false,"isScale":false,"address":3,"id":"coils.4.3_Relais-4-4"},{"_address":4,"deviceId":4,"name":"Relais-4-5","description":"Relais-4-5","formula":"","role":"switch","room":"","poll":false,"wp":false,"cw":false,"isScale":false,"address":4,"id":"coils.4.4_Relais-4-5"},{"_address":5,"deviceId":4,"name":"Relais-4-6","description":"Relais-4-6","formula":"","role":"switch","room":"","poll":false,"wp":false,"cw":false,"isScale":false,"address":5,"id":"coils.4.5_Relais-4-6"},{"_address":6,"deviceId":4,"name":"Relais-4-7","description":"Relais-4-7","formula":"","role":"switch","room":"","poll":false,"wp":false,"cw":false,"isScale":false,"address":6,"id":"coils.4.6_Relais-4-7"},{"_address":7,"deviceId":4,"name":"Relais-4-8","description":"Relais-4-8","formula":"","role":"switch","room":"","poll":false,"wp":false,"cw":false,"isScale":false,"address":7,"id":"coils.4.7_Relais-4-8"}]
modbus.2 2025-08-24 14:31:53.870 debug Initialize Objects for disInputs: []
modbus.2 2025-08-24 14:31:53.827 info starting. Version 6.3.2 in /opt/iobroker/node_modules/iobroker.modbus, node: v20.19.4, js-controller: 7.0.6
Log aus dem ModBus Tool, leider nur als Screenshot möglich.

Meine Modbus Adapter Einstellungen sind wie folgt:
Allgemein:

Diskrete Ausgänge:

Hat einer von Euch eine Idee, wie ich als Datenpunkt den Status aus Adresse 0 bekomme? Dann kann ich zwar umständlich aber per Skript mir manuelle Datenpunkte schalten. Grund ist, das ich den aktuellen Status von Relais 2-4 nicht sehe:

Grüße