F_Trig - Allen-Bradley Micro800 General Instructions Manual

Programmable controllers

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Table of Contents

Boolean instructions

F_TRIG

F_TRIG detects a falling edge of a Boolean variable.

F_TRIG function block language examples

Function Block Diagram (FBD)

Ladder Diagram (LD)

Rockwell Automation Publication 2080-RM001D-EN-E - February 2015

Any Boolean variable.

TRUE when CLK changes from TRUE to FALSE.

FALSE in all other cases.