Interrupt events
Cyclic program execution can be interrupted by the following:
•• time-controlled program execution (delayed interrupt, cyclic timed
interrupts, clock-controlled interrupts),
•• interrupt-driven program execution (process interrupt, system
interrupt).
The cyclic program can be interrupted or even aborted completely by
the following:
•• a device hardware fault or program error
•• operator intervention (using the PC stop function, or setting the
mode selector to "stop", multiprocessor stop MP-STP),
•• a stop operation
Processing the User Program
CPU 948 Programming Guide
3 - 14 C79000-G8576-C848-04
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