Function Blocks
3/99 Function Block Reference Guide 11
2.4 4ADD Function Block
Description
The
4ADD
label stands for
Addition Mathematical Operation (4 Inputs)
. This block is part of the
Math
category. It looks like this graphically on the Control Builder.
Function
Add FOUR inputs (X1, X2, X3,Y) to get an output.
OUT
= X1+ X2 + X3 + Y
Input
X1
= First Analog Input
X2
= Second Analog Input
X3
= Third Analog Input
Y
= Fourth Analog Input
Note: All four inputs must be connected or unused inputs inverted. Unconnected inputs default to zero.
Output
OUT
= Sum of the analog values
Block Properties
Double click on the function block to access the function block properties dialog box.
Block Order (Read Only)
You can change the assigned execution order number by selecting “Execution Order” in the “Configure”
menu and arrange the order to suit your control strategy.
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