Basics
3.20 Operational sequence
S7-1500 Motion Control V13 Update 3
Function Manual, 07/2014, A5E03879256-AC
81
If the set application cycle is not adhered to, for example because the application cycle is too
short, overflows can occur.
The CPU will not tolerate overflow of MC-Servo [OB91]. An overflow will cause the CPU to
change to STOP mode.
The following figure shows the operational sequence if there is an overflow of MC-Servo
[OB91]:
The execution of an MC-Interpolator [OB92] may only be interrupted by an MC-Servo [OB91]
call. If more interruptions occur, the CPU switches to STOP mode.
The following figure shows the sequence when an MC-Interpolator [OB92] is interrupted over
two time slices:
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