Honeywell HC900 - TRIG Trigger Function Block

Function Blocks
TRIG Trigger Function Block
424 HC900 Hybrid Control Designer Function Block Reference Guide Revision 11
2/07
TRIG Trigger Function Block
Description
The TRIG label stands for Trigger or “One Shot” operation.
This block is part of the
Logic and Fast Logic categories.
Function
Turns a Logic output (OUT) ON for one logic scan cycle, when a logic input (X) goes from OFF to ON.
• If X = ON and previous value of X was OFF, then: OUT = ON (one scan)
• Otherwise, OUT = OFF
Input
X
= Trigger command signal
Output
OUT
= triggered pulse
ATTENTION
The duration of the logic pulse output is one function block execution cycle. The duration of
the fast logic pulse output is 100 ms, or the fast logic cycle time.
Block properties
Double click on the function block to access the function block properties dialog box.