Author Question: The operation of the SQO instruction in the Logix processor ________. A) Is the same as that for ... (Read 70 times)

joe · **on:** Jul 28, 2018

The operation of the SQO instruction in the Logix processor ________.

A) Is the same as that for the PLC 5 and SLC 500
B) Uses a control data type for only the control parameter
C) Uses tags for the file, destination, and control parameters
D) All of the above

Question 2

Which of the following statements correctly describes how the SQO sequences response to the first two scans of the processor?

A) If the rung is true at the time of the first scan and the position parameter is 0, then the data in the memory location at position 0 is NOT transferred to the destination register and the position pointer is NOT incremented.
B) If the rung is false at the time of the first scan and the position parameter is 0, then the data in the memory location at position 0 is transferred through the mask to the destination register and the position pointer is incremented by 1.
C) When the processor is first changed from the program to the run mode, the operation of the SQO instruction is dependent upon the condition of the rung (true or false) at the time of the first scan.
D) After the first scan the sequencer operation is triggered by a false condition on the ladder rung.