The PLC counter instruction is similar to the:
A) internal relay instruction.
B) transitional contact instruction.
C) relay coil and contact instruction.
D) timer instruction.
Correct Answer:
Verified
Q17: The counter number C5:4 represents counter file
Q18: Counters are similar to timers,except that they
Q19: The counter enable bit is true whenever
Q20: The output of the counter is energized
Q21: Normally counters are retentive.This means that if
Q23: Programmed counters can:
A)count up.
B)count down.
C)be combined to
Q24: A PLC down-counter (CTD)counts:
A)scan transitions.
B)true-to-false transitions.
C)false-to-true transitions.
D)both
Q25: When the up-counter reset is set to
Q26: A counter is to be programmed to
Q27: The accumulated count of a CTD counter:
A)increments
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