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← TechnologyDuring automated conveyor system overload, which consequence results when the PLC's scan cycle exceeds its maximum configured execution time?
A)Communication bus synchronization loss
B)Inconsistent state machine transitions✓
C)Motor drive thermal runaway
D)I/O module address collision
💡 Explanation
Inconsistent state transitions occur because, during PLC cycle overrun, sampled inputs change mid-cycle; the system experiences inconsistent states rather than continuous operation, because the PLC misses timing windows during operation. Therefore, the program will execute erratically rather than predictably.
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