Function Blocks
DCMP Deviation Compare Function Block
126 HC900 Hybrid Control Designer Function Block Reference Guide Revision 11
2/07
DCMP Deviation Compare Function Block
Description
The DCMP label stands for Deviation Compare.
.
This block is part of the
Calculations category
Function
Compares up to 6 analog inputs to a + or – user-entered deviation setpoint to a 7
th
input reference value and
sets the output true if any input exceeds the deviation value from the reference value. Output is off if all
inputs are less than the deviation.
Plus Dev Compare Value = Reference input + User entered Plus Deviation value
Minus Dev Compare Value = Reference input - User entered Minus Deviation value (Minus Deviation
value should be a positive number)
If any IN (1-6)> the Plus Dev Compare value, Out = ON
If any IN (1-6) < the Minus Dev Compare value, Out = ON
ATTENTION
When the reference input is the average of the 6 inputs, the block performs deviation from
average.
Input
IN1
= Input 1
IN2 = Input 2
IN3 = Input 3
IN4 = Input 4
IN5 = Input 5
IN6 = Input 6
Y =Reference Input
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