Watchdog timer exceeded when using simulink in PLCnext

Anshuljaswal

Hi

My watchdog is exceeding whenever i increase prediction horizon, for the MPC block which i imported from Simulink in PLCnext.

I am getting following error always

Martin [PLCnext Technology Team]

Hi, the advice is the same as in this earlier conversation:

https://www.plcnext-community.net/forum/#/discussion/3750/communication-error-while-updating-values

In this case I would monitor the task execution time using the elements of the ESM_DATA structure, in a Watch window, as you change the model parameters. If the execution time (in micro-seconds) consistently approaches the task interval, then you need a bigger task interval.