I have successfully established communication between a Allen Bradley Compact Logix 1769-L32E running firmware version 20.013 and an Ignition Edge running in a EPIC-PR1 with system version 2.0.2-b.139.
Due to an issue with the AB I updated the firmware to the latest revision which is 20.019. With that update Ignition Edge is no longer able to talk to the variables on the AB. It shows the device as “connected” but cannot access the variables. The error that I get from Groov View from each variable is: groov and the OPC UA server are communicating normally, but the server is not able to communicate with the field device. Details: Bad_CommunicationError (0x80050000) “A low level communication error occurred.”
The program that was loaded into the PLC after the update was the same as the one before. I then also downgraded the firmware to 20.013, reloaded the program and Ignition Edge communication was reestablished.
Does anyone have experience with this? Thank you.