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Function Blocks
HMON High Monitor Function Block
170
HC900 Hybrid Control Designer Function Block Reference Guide
Revision 11
2/07
HMON High Monitor Function Block
Description
The
HMON
label stands for
High
Monitor.
This block is part of the
Alarm/Monitor
category.
Function
Monitors two analog input values (X and Y) and turns ON a digital output if X exceeds Y.
A hysteresis adjustment is provided to prevent output cycling.
•
If X > Y, then
OUT = ON.
•
If X < or = (Y – Hysteresis), then
OUT = OFF.
•
If (Y – Hysteresis) < X < Y, then
OUT = Previous State.
Input
X
= Analog value.
Y
= Analog value
Output
OUT
= Digital signal
Block properties
Double click on the function block to access the function block properties dialog box.