Hello, I’m establishing a SCADA connection via OPC UA using symbol configuration.
CPU: 750-8112
Fw: 28
The connection occasionally drops, and I have to restart OPC via WBM to regain access.
Is there a place on the CPU side where OPC can be configured?
The SCADA unit told me I need to check the maximum number of sessions.
Hi hkn_blt.
If you have the ability to convert your application to our newest release of Codesys (3.5 - Service pack 21 - Patch 5) and Firmware 31. Please give this a try, as there has been several improvements to OPC-UA.
Best Regards Jan
I have a very similar issue as well. My PLC is a 750-8212 with firmware 30. I’ve trued OPC UA on firmware 26, 28, 29 and 30 as well as several versions of Codesys. The problem has persisted through all versions with no improvement.
The problem lies in the way how they pfc200 series handles his cycle times.
I’ve had a application with about 10 OPC-tags which was running fijne
Once I had more tags the PFC started to crash, the more OPC tags the faster it went into crash.
Ik have moved my Scalda tags to Modbus which works great without crashes.
I don’t want to migrate to Modbus. There are many tags in the project. Is there a library where I can manage OPC settings? Because I can’t modify the settings.