Rockwell Automation GMLC Reference Manual - Manual (Page 500)

Publication GMLC-5.2 - November 1999
Expression Operators 463
There are three kinds of GML Commander expression operators:
• Mathematical — Combines the numerical values in an expres-
sion.
• Logical — Combines the logical (true/false) variables, status
conditions, and discrete I/O states to make decisions.
• Relational — Lets the numerical and logical comparisons to be
made and assigns a value to a variable
Mathematical Operators
Use mathematical operators to combine numerical values in an
expression. The available mathematical operators are:
• + (plus sign) — Addition
• - (minus sign) — Subtraction and Unary Minus
• * (asterisk) — Multiplication
• / (slash) — Division
• ^ (carat) —- Exponentiation (to the power of)
• // (double slash) — Integer Division (Quotient)
• @ (at symbol) — Integer Division (Remainder)
Addition
+
Use the plus sign to add two elements together. For example, the
following expression evaluates to 12.5 if the most recent registration
position of Axis 0 is 2.5 position units.
Registration_Position_AXIS0 + 10