AC500 Start PLC After stop from Watchdog
For my project ı am using pm573 which communicate with two other pm573's and Scada with Modbus TCP. Sometimes PLC stops from watchdog, so ı configure it from Control Builder Plus to warmstart as it stops from Watchdog(E2 failure). It solves my problem(by use of retain variables).
But ı wonder that, how can ı start program after it stops from watchdog(not use warmstart!).
I Also know that if ı increase watchdog timer sensitivty it stops after sensitivity times of watchdog expire occurs, yet ı do not want to use that solution
I am using CB+ 2.2.0
(CB+ 2.2.0 version's Modbus TCP library have problems?, I also think if it solves my problem to upgrade to version 2.3.0)
Thanks for help
You probably have found a solution but I will give it a go.
If you have communication running on an AC500 it is recommended to use cyclic tasks.
If you are running freewheeling there should be a parameter in CPU parameters where you can raise the pause(for COM) between every freewheeling.
When you use modbus tcp you can raise the OMB time. Then the tcp sockets dont have to be opened and closed every time ther is a request to the plc.
There is no issues with firmware v2.2, CB+ v2.2 and modbus tcp.