Rockwell Automation 1769-BOOLEAN Compact I/O Module Reference Manual - Manual (Page 23)

Publication 1769-RM016A-EN-P - July 2006
Module Operation 23
Example 4: Duration > 0, Delay = 0, Duration > TRUE Time
In this example, the output is configured with a duration time greater than 0, a
delay time equal to 0, and the configured duration time is longer than the time
that the Boolean expression remains TRUE.
Since the configured duration time is greater than 0, a “One-shot” pulse
occurs on the output. The pulse starts at the same time as the FALSE to
TRUE transition of the Boolean expression because the configured delay time
is equal to 0. The “One-shot” pulse lasts as long as the configured duration
time even though the Boolean expression transitions to FALSE.