Examlex
The forcing capability of a PLC allows the user to turn an external I/O on or off regardless of the state of the device.
Q6: The logic symbol shown is that of
Q20: BOOL type tags can be used to
Q24: Which of the following is not a
Q30: PLCs are generally placed within an enclosure.
Q41: The value of the number stored in
Q43: Suppose the accumulated count is 60 before
Q45: A PLC down-counter (CTD)counts:<br>A)scan transitions.<br>B)true-to-false transitions.<br>C)false-to-true transitions.<br>D)both
Q46: Rung No.4 contains the logic that: <img
Q59: For each position of the sequencer shown,data
Q70: Immediate instructions are most useful when programmed:<br>A)immediately