Valid Operators; Format Expressions - Allen-Bradley Logix5000 Reference Manual

Chapter 6 Compute/Math Instructions (CPT, ADD, SUB, MUL, DIV, MOD, SQR, SQRT, NEG, ABS)
Operator Description
+ add
- subtract/negate
* multiply
/ divide
** exponent (x to y)
ABS absolute value
ACS arc cosine
AND bitwise AND
ASN arc sine
ATN arc tangent
COS cosine
DEG radians to degrees
FRD BCD to integer
LN natural log
LOG log base 10
264

Valid Operators

Optimal
DINT, REAL
DINT, REAL
DINT, REAL
DINT, REAL
DINT, REAL
DINT, REAL
REAL
DINT
REAL
REAL
REAL
DINT, REAL
DINT
REAL
REAL

Format Expressions

For each operator that you use in an expression, you have to provide one or two
operands (tags or immediate values). Use the following table to format operators
and operands within an expression.
For operators that
operate on
One operand
Two operands
Rockwell Automation Publication 1756-RM003N-EN-P - October 2011
Operator Description
MOD modulo-divide
NOT bitwise complement
OR bitwise OR
RAD degrees to radians
SIN sine
SQR square root
TAN tangent
TOD integer to BCD
TRN truncate
XOR bitwise exclusive OR
Use this format
Operator(operand)
Operand_a operator operand_b
Optimal
DINT, REAL
DINT
DINT
DINT, REAL
REAL
DINT, REAL
REAL
DINT
DINT, REAL
DINT
Examples
ABS(tag_a)
·tag_b + 5
·tag_c AND tag_d
·(tag_e ** 2) MOD (tag_f /
tag_g)