Alarm, error and system messages
9.2 PROFINET IO
ET 200pro distributed I/O system
220 Operating Instructions, 03/2013, A5E00335544-08
Triggering a process interrupt
If there is a process interrupt, the CPU interrupts user program execution and processes the
process interrupt block OB 40. The result that triggered the interrupt is added to the start
information of OB 40.
Note
Process interrupts should not be used for technological purposes (cyclic generation of
process interrupts, for example), because thes
e can become lost in the overall system.
Triggering a swapping interrupt
The CPU interrupts the user program and processes the diagnostics block OB 83. The
interrupt triggering event is logged in the start information of OB 83.
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