Author Question: Which one of the following scan statements is NOT true? A) Scan time is affected by the length of ... (Read 85 times)

809779 · **on:** Jul 28, 2018

Which one of the following scan statements is NOT true?

A) Scan time is affected by the length of the program.
B) Allen Bradley PLCs scan from left to right and top to bottom of the ladder logic.
C) A one second scan time is common.
D) Some instructions affect the length of the scan time.

Question 2

The ________ construct allows the program to execute designated lines of code as long as certain conditions are true.

A) REPEAT UNTIL B) FOR . . . DO
C) WHILE . . . DO D) IF . . . THEN