Add (Add); Relay Ladder; Structured Text; Function Block - Allen-Bradley Logix5000 Reference Manual

Chapter 6 Compute/Math Instructions (CPT, ADD, SUB, MUL, DIV, MOD, SQR, SQRT, NEG, ABS)

Add (ADD)

dest := sourceA + sourceB;
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The ADD instruction adds Source A to Source B and places the result in the
Destination.
Operands:

Relay Ladder

Operand
Source A
Source B
Destination

Structured Text

Use the plus sign "+" as an operator within an expression. This expression adds
sourceA to sourceB and stores the result in dest.
See Structured Text Programming
within structured text.

Function Block

Operand
ADD tag
Rockwell Automation Publication 1756-RM003N-EN-P - October 2011
Type Format
SINT Immediate Tag
INT
DINT
REAL
A SINT or INT tag converts to a DINT value by sign-extension.
SINT Immediate Tag
INT
DINT
REAL
A SINT or INT tag converts to a DINT value by sign-extension.
SINT Tag
INT
DINT
REAL
for information on the syntax of expressions
Type
FBD_MATH
Description
Value to add to Source B
Value to add to Source A
Tag to store the result
Format Description
Structure ADD structure