Make Modbus RTU data available on OPC UA Server

NETWORKING SOLUTIONS
1

Good day,

I am using RUT906 routers to read data from sensors using Modbus RTU over RS485 and then pushing the data to various endpoints. Pushing the data to http and MQTT servers/brokers is easily configured and works without issue.

What I would like to know is how I would go about making data retrieved using the Modbus Serial Client available on the OPC UA Server module. I can install the OPC server package and connect to it, but I can see no way of configuring additional groups and values.

I have looked at using a script but neither the Modbus client not the OPC server modules expose much beyond a simple status call via the ubus command.

Any assistance would be greatly appreciated.

3

Hello,

We are currently working on your issue and will get back to you as soon as we have an answer.

Kind regards,
M.

4

Thank you, your efforts are sincerely appreciated.

5

Hi, Marius,

Apologies for the long wait, as I was on a sick leave.

After double-checking, it seems that by default, this is not something that is achievable with our devices. What I can do for you, is register a suggestion for our R&D, so they could consider implementing this sometime in the future.

Regards,
M.

6

Thank you, Matas.

For the time being I will create my own OPC server on another system and just populate it with data from the MQTT broker.

Once again thank you for your assistance.