Rockwell Automation GMLC Reference Manual - Manual (Page 690)

Publication GMLC-5.2 - November 1999
653
Square Root
The value of the Square_root function is the square root ( ) of the
argument, as shown below.
The argument may be any floating point value or expression, but must be
positive. A negative argument gives a value of 0 for the Square_root
function.
For example, the following expression is evaluated as 5 if the user
variable Cut_Length has a value of 25.
Square_root(Cut_Length)
Argument
1
2
1 2 3 4 5
3