CX Server OPC and C#

[Alexandre BG 0]

Hi everyone,

This is my first time playing with PLC, I'm not an expert but usually figure out stuff pretty quickly. I'm about to go crazy trying to read from CX Server OPC from a .Net application. I followed all the instructions provided and still no luck. I'm able to connect to the OPC server, but for whatever reason, the points I'm trying to read are giving errors on the OPC server level. I had to downgrade from .net 4.7 to 4 to have the application working to start with. Any guidance would be appreciated. Note that I can easily see the available points in MaktrikonOPC Explorer. So the OPC server in itself works fine.

I have attached some pictures if it can help.

Thank you,

[drYurban 0]

Try asking immediately by tag name, without specifying the tag group. When I was struggling with this server, I also received the same error.