Enable cloud-fieldbus configuration for modbus RTU with thin-edge modbus-plugin

Forum
, , ,
1

Hi there ,

I want to expand the modbus-plugin for thin-edge with modbus RTU capability, but there is something I don’t get. How does Cumulocity know to only allow modbus TCP configuration (git issue)?

Or what I actually wanna know, how can I tell Cumulocity to allow for configuration of modbus RTU devices? Is it via SmartRest, a ManagedObject Fragment, …?

I tried the Docs, but couldn’t find it.

Thanks in advance :slight_smile:

2

Adding RTU child devices is enabled for devices that contain the c8y_SerialConfiguration fragment. Here is an example:

{
    "c8y_SerialConfiguration": {
        "parity": "N",
        "stopBits": 2,
        "dataBits": 8,
        "baudRate": 9600
    }
}

You can also add c8y_SerialConfiguration to c8y_SupportedOperations to allow editing of these serial configuration values intended to control how the gateway device handles the serial interface towards Modbus.

2 Likes