Modbus client support

Hi RV.IO-Team,

I’m currently testing Modbus communication between a Siemens S7-1514 (MB_SERVER) and realvirtual.io.

The TCP connection works and the client connects successfully, but the ModbusInterface script never populates the internal register arrays (e.g. outputregisters). Because of that the signals never receive values.

In the documentation I saw the note:

“Currently realvirtual.io can only be used as a Modbus master. Client support will be added in one of the next releases.”

Does this mean the polling/reading functionality is not fully implemented yet, or is there a recommended setup for reading holding registers from a PLC?

I would like to use Modbus for simulating valves and sensors in a digital twin, so knowing the intended workflow would help a lot.

Best regards
Andreas