Rockwell Automation 1769-BOOLEAN Compact I/O Module Reference Manual - Manual (Page 21)

Publication 1769-RM016A-EN-P - July 2006
Module Operation 21
Example 2: Duration > 0, Delay < TRUE Time
In this example, the output is configured with a duration time greater than 0, a
delay time greater than 0, and the configured delay time is shorter than the
time that the Boolean expression remains TRUE.
Again, since the configured duration time is greater than 0, a “One-shot” pulse
occurs on the output. The pulse starts an amount of time after the FALSE to
TRUE transition of the Boolean expression equal to the configured delay time.
The “One-shot” pulse again lasts only as long as the configured duration time
even though the Boolean expression remains TRUE. The second “One-shot”
pulse occurs on the output since there was a FALSE to TRUE transition in the
Boolean expression after the first “One-shot” pulse is completed.