Hi
I'm new to Node-RED and I'm trying to get data from a Modbus-TCP device.
This Modbus-TCP device is a Janitza UMG 509 energy meter. It is directly connected to the network.
I tried to use the 'Modbus-Read' node of node-red-contrib-modbus (5.31.0).
So I created a server with the following data:
- Type: TCP
- Host: IP of the device
- Port: 502
- TCP Type: DEFAULT
- Unit-Id: 0
- Timeout (ms): 1000
On the settings itself I tried the following data:
- Unit-Id: 0
- FC: FC3: Read Holding Registers
- Address: 19000
- Quantity: 2
- Poll Rate: 5 seconds
- Server: the server I have describe above
From the node I get the following debug message:
msg : error
"Error: Modbus exception 4: Slave device failure (device reports internal error)"
This Janitza device acts also as TCP-RS485-gateway. On the RS485 bus other Janitza devices are connected. Every of these devices has its own unit id. Reading data from these devices is working.
Based on that I can say that the general server and network configuration is fine.
Can someone help me?
