Configuration installation: PLC's are connected to kepserver.
Kepserver is configured as OPCUA via ignition gateway.
Since replacing a PLC, we are experiencing very slow communication between ignition and the kepserver. after entering a value via ignition client, it takes a lot of time to accept the value, most of the time this error appears:
Error writing 95 to tag [Tags]"Tag path" com.inductiveautomation.ignition.client.gateway_interface.GatewayException Read timed out
The new PLC (Schneider M580) is replacing an old Schneider Premium TSX PLC.
The Logic, Tags, parameters are mostly identical.
The program on the PLC runs with normal cyclus-times
We've checked the communication between PLC and kepserver, no read or write failiures, communication is stable.
Thanks for reaching out Mr.
The strange thing Is that dataflow between PLC and kepserver goes flowless, when data changes in PLC, it changes on ignition within a second.
When writing a value in ignition, kepserver is blocking.
When writing a value via a modbus tool to the PLC, it goes flowless.
I wouldn't waste your time on Kepware, in my experience it causes more issues than it solves. Consider going to the manufacturer provided solution that you can get direct support from the PLC manufacturer with.
Hi Frederik, it sounds like the new PLC might handle writes a bit differently than the old one. Have you tried changing the write settings in Kepserver? That might fix the delay. Also, testing with another OPC UA client like UaExpert could help check if the issue is with Kepserver or Ignition