10.4. Arithmetic Expressions
Arithmetic Expressions are formulas used in parameterized programming to calculate values.
You use square brackets instead of parenthesis in expressions. An expression may look like this:
#100 = #102*#101+[#10+23]
In plain English, this expression says: Multiply the value of variable 102 and 101 and then add the sum of variable 10 and 23 and put the result in variable 100.
There are a number of functions that you can use in expressions. They are listed here. For an in-depth explanation of these, please refer to the Fanuc programming manual or the book mentioned in the introduction.
|
Name
|
Function
|
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SIN
|
Sine (in degrees)
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COS
|
Cosine (in degrees)
|
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TAN
|
Tangent (in degrees)
|
|
ASIN
|
Arc sine
|
|
ACOS
|
Arc cosine
|
|
ATAN or ATN
|
Arc tangent with one or two arguments
|
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SQRT or SQR
|
Square root
|
|
ABS
|
Absolute value
|
|
ROUND or RND
|
Rounding off
|
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BIN and BCD
|
Currently not in use in the simulator
|
|
FIX
|
Rounding down to the closest integer
|
|
FUP
|
Rounding up to the closest integer
|
|
LN
|
Natural logarithm
|
|
EXP
|
Exponent using base e
|
|
POW
|
First argument to the power of the second one
|
|
ADP
|
Currently not in use in the simulator
|
|
OR
|
Logical OR performed on integers, bit by bit
|
|
XOR
|
Logical XOR performed on integers, bit by bit
|
|
AND
|
Logical AND performed on integers, bit by bit
|
|
MOD
|
Modulus
|
Example calculating the sine value of the value of variable 101:
#100 = SIN[#101]
Note that in the simulator, the logical bitwise operators will only work on integers.
Example:
#10 = 2
#11 = 4
#12 = #10 AND #11 (This is OK)
Incorrect use:
#10 = 2.1
#11 = 4
#12 = #10 AND #11 (Will show an alarm)
