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DMC-3425 Chapter 7 Application Programming• 129
Functions
FUNCTION DESCRIPTION
@SIN[n] Sine of n (n in degrees, with range of -32768 to 32767 and 16-bit fractional resolution)
@COS[n] Cosine of n (n in degrees, with range of -32768 to 32767 and 16-bit fractional resolution)
@TAN[n] Tangent of n (n in degrees, with range of -32768 to 32767 and 16-bit fractional resolution)
@ASIN*[n]
Arc Sine of n, between -90° and +90°. Angle resolution in 1/64000 degrees.
@ACOS* [n}
Arc Cosine of n, between 0 and 180°. Angle resolution in 1/64000 degrees.
@ATAN* [n]
Arc Tangent of n, between -90° and +90°. Angle resolution in 1/64000 degrees
@COM[n] 1’s Complement of n
@ABS[n] Absolute value of n
@FRAC[n] Fraction portion of n
@INT[n] Integer portion of n
@RND[n] Round of n (Rounds up if the fractional part of n is .5 or greater)
@SQR[n] Square root of n (Accuracy is +/-.0001)
@IN[n] Return digital input at general input n (where n starts at 1)
@OUT[n] Return digital output at general output n (where n starts at 1)
@AN[n] Return analog input at general analog in n (where n starts at 1)
* Note that these functions are multi-valued. An application program may be used to find the correct
band.
Functions may be combined with mathematical expressions. The order of execution of mathematical
expressions is from left to right and can be over-ridden by using parentheses.
Instruction
Interpretation
V1=@ABS[V7] The variable, V1, is equal to the absolute value of variable V7.
V2=5*@SIN[POS]
The variable, V2, is equal to five times the sine of the variable,
POS.
V3=@IN[1] The variable, V3, is equal to the digital value of input 1.
V4=2*(5+@AN[5])
The variable, V4, is equal to the value of analog input 5 plus 5,
then multiplied by 2.
Variables
For applications that require a parameter that is variable, the DMC-3425 provides 126 variables.
These variables can be numbers or strings. A program can be written in which certain parameters,
such as position or speed, are defined as variables. The variables can later be assigned by the operator
or determined by program calculations. For example, a cut-to-length application may require that a cut
length be variable.
Instruction Interpretation
PR POSA Assigns variable POSA to PR command
JG RPMB70 Assigns variable RPMB multiplied by 70 to JG command.