Rockwell Automation 8520-GUM 9/Series CNC Grinder Operation and Programming Manual Documentation Set - Manual (Page 648)

Paramacros
Chapter 20
20-4
Table 20.B
Mathematical Functions
Function Meaning
SIN Sine (degrees)
COS Cosine (degrees)
TAN Tangent (degrees)
ATAN Arc Tangent (degrees)
ASIN Arc Sine (degrees)
ACOS Arc Cosine (degrees)
SQRT Square Root
ABS Absolute Value
BIN Conversion from BCD to Decimal
BCD Conversion from Decimal to BCD
ROUND Rounding Off (nearest whole number)
FIX Truncation Down
FUP Truncation Up
LN Logarithms (base e)
EXP Exponent
When programming these functions, the value on which that function is to
be performed must be included in brackets. For example, SIN [10]. The
exception to this is the arc tangent function. The format for ATAN requires
the division of two values. For example, ATAN [10]/[2] is used to
calculate the arc tangent of 5.
The functions in Table 20.B are executed from left to right in a program
block. These functions are executed before the control executes any
mathematical operators such as addition or subtraction. This order of
execution can be changed only by enclosing operations in brackets [].
Operations enclosed in brackets are executed first.
Example 20.3 illustrates the format for the mathematical functions found in
Table 20.B.
Example 20.3
Format for 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.
LN[#2+4] This evaluates the logarithm of the value of parameter #2 plus 4.
Example 20.4 illustrates the results obtained when using the functions in
Table 20.B.