Freezing DI524-XC IO
Our system is attached as "devices.jpg". This system works without problems for 5 months. Unfortunately past two days digital inputs on the CI502 are freezing. But digital outputs are not freezing. I can change on-off digital outputs. Digital inputs are not changing when the input signals changes. When I reboot CPU then it comes to normal.
What could be the problem and how can I solve it?
PS. I'm using Automation Builder ver 1.1.2
sorry for the delayed answer. You can check in Codesys - Task configuration - how is set the task attributes, typically cyclic or freewheling.
If you have actual freewheling type selected, you can test with cyclic mode and adjust progressively the cycle time, starting for example with t#200mS - increasing step of 20 mS - and monitoring if different timing conditioning the PLC and the freezing mistake.
Hope this help you, let us know about the results