Data not being shown in client from OPC UA Server

stefpender · April 2021

I've been using the OPC UA server for months now with a virtual controller setting up communications. Today I'm getting error messages "Error creating monitored item on server." I tried updating the OPC UA server and RobotStudio. Using Softing DataFEED client as the manual recommends. Any ideas?

Image: https://us.v-cdn.net/5020483/uploads/editor/qs/2i2kjss5ig6p.png

stefpender · April 2021

Uninstalled and reinstalled everything. It's working now!

user_matiss · November 2021

Good day! I have been using virtual controller IRC5 and OPC-UA server in RS2021 actively for the last few months. This is a task for students to do connection with UAExpert client. We have a lot of issues for controller tags of Rapid variables and I/O signals not showing up on the opc client side. Usually this works only after several re-starts and recreation of robot alias in the server.

Is this somewhat related to the virtual controller? Othervise this is a production-like setup.

XNOR · December 2021

Thanks for sharing your issue and updating. I'm trying the IOT Gateway against an older version of robotware (6.05.02) and only get PERS variables (no VAR or CONST) -- perhaps I need to try some re-installs.

Maxim Riabichev · December 2021

Hello,

user_matiss After creating a persistent variable on the controller, you have to restart the IoT Gateway for it to show up in the client. Same goes for when you delete a variable from the controller.

XNOR According to the manual https://robotapps.blob.core.windows.net/apps/ApplicationManual IoT Gateway v1.1.pdf:

I.e. only persistent variables are available from the RAPID domain.

Data not being shown in client from OPC UA Server

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