800xA - No inner connection to current data - probably OPC problem?
Single station system with one redundant PLC. 800xA 5.1 FP4.
In attachment you can see:
- settings for OPC: Service, Service Group, Provider;
- service status (everything is running & ok)
- settings of control network for OPC definition
In Startup Display from Object Exlplorer I put several elements to display value of FB SignalBasicInReal (in Control Builder I can monitor they are working). See attachment.
Going to operator workplace I see all the objects in dead state - they display nothing, not even zeros. See attachment.
It seems like data is not transfered to graphics at all.
By the way Alarm&Event are working all right - I see them & acknoledgment is availiable.
If I connect with Matrokon OPC Explorer - OPC server is availiable, and in the same tags I see living data. See attachment.
What could be wrong in settings?
What components to reinstall?
Voted best answer
What do you get when subscribing for live data in the Function Block aspect in Plant Explorer?
Check if affinity is deployed on the OPC DA Connector service, if yes, ensure your client is listed as allowed to connect to the connectivity server node
You can also erase the OPC DA Connector service group and provider object and recreate new via the OPC Data Source Definition's "wizard" function.