Rockwell-automation 1769-BOOLEAN Compact I/O Module Reference Manual Manuel d'utilisateur télécharger pdf (Page 26)

Publication 1769-RM016A-EN-P - July 2006

26 Module Operation

Example 7: Duration = 0, Delay > TRUE Time

In this example, the output is configured with a duration time equal to 0 (the

output will remain ON only if the Boolean expression remains TRUE) and a

delay time greater than 0. Conditions where the Boolean expression remains

TRUE both for less than and longer than the configured delay time are

illustrated.

The first instance that the Boolean expression goes to the TRUE state, but

does not remain continuously TRUE for a period of time exceeding the

configured delay time, it does not cause the output to turn ON. When this first

TRUE condition ends, the corresponding delay time event also ends. The next

time the Boolean expression becomes TRUE, a new delay time event begins.

This second TRUE event does continuously remain TRUE for longer than the

configured delay time and the output turns ON. The output remains ON until

the Boolean expression becomes FALSE, at which point it immediately turns

OFF since the configured duration time is 0.

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Rockwell-automation 1769-BOOLEAN Compact I/O Module Reference Manual Manuel d'utilisateur Page 26