WINCCOA 3.20 Communications Failure

[ccmelo]

I’d like to ask for some advice on how you usually diagnose communication failures between drivers and PLCs in WinCC OA.
I’m currently working on creating animations for some objects, and I need a reliable way to detect and visualize when communication is lost.

[hpuchegger]

Generally, it depends on the driver, but in the log, for example, there is the message 'Driver communication failure' which could be checked. With -dbg conn, you could see more in the log.
There are also properties e.g. [opcua] setInvalidForConnLoss which could be used.

Br, Herbert

[leoknipp]

In most of the cases in WinCC OA a datapoint is created for a PLC connection.
At this datapoint you will find DP elements which provide the information for the connection status.
Here is an example for the S7 driver:
https://www.winccoa.com/documentation/W ... =connstate

Best Regards
Leopold Knipp
Senior Support Specialist