Rockwell Automation 8520 9/Series CNC Lathe - Manual (Page 29)

Basic Control Operation
Chapter 2
2-7
Example 2.2
Format for [CALC] Functions
SIN[2] This evaluates the sine of 2 degrees.
SQRT[14+2] This evaluates the square root of 16.
SIN[SQRT[14+2]] This evaluates the sine of the square root of 16.
Example 2.3
Mathematical Function Examples
Expression Entered Result
SIN[90] 1.0
SQRT[16] 4.0
ABS[-4] 4.0
BIN[855] 357.0
BCD[357] 855.0
ROUND[12.5] 13.0
ROUND[12.4] 12.0
FIX[12.7] 12.0
FUP[12.2] 13.0
FUP[12.0] 12.0
LN[9] 2.197225
EXP[2] 7.389056
Important: Precaution must be taken when performing calculations within
the brackets [ ]. The operations within the bracket are performed first, and
then the function is performed on this resultant. For example:
ROUND[2.8+2.6]; The result of this is 5.0
The values in the brackets are added together first and then rounded, not
rounded and then added together.
Paramacro Variables in CALC Operations
Any paramacro variable can be accessed through the CALC function.
Include a # sign followed by the paramacro variable number. When the
calculation is performed the value of that paramacro variable is substituted
into the equation. You can not change the value of paramacro variables
with the CALC function. Local parameters are only available for the
currently active nesting level of the control (main program, or one of four
nested macro programs). You can not perform calculations that contain
any paramacro variables if the control is currently executing a program
block. The control must be in either cycle stop state, or E-Stop.