Siemens SIMATIC NET CP 5613 Manual page 223

What should a user programmer take into account?
Use unique order_ids for parallel jobs.
Remember that a hardware event entering the state deletes its activation
condition. You must make sure it is reactivated.
Do not use hardware events at the same time as periodic polling on the same
slave.
DP Base Programming Interface for CP 5613/CP 5614
C79000-G8976-C108-02
FAQ (Frequently Asked Questions)
223