DMC-1000 Chapter 7 Application Programming • 103
Examples - Valid Variable Names
POSX
POS1
SPEEDZ
Examples - Invalid Variable Names
Variable Problem
REALLONGNAME Cannot have more than 8 characters
124 Cannot begin variable name with a number
SPEED Z Cannot have spaces in the name
Assigning Values to Variables:
Assigned values can be numbers, internal variables and keywords, functions, controller parameters and
strings;
Variables hold 6 bytes of data, 4 bytes of integer (2
31
)followed by two bytes of fraction providing a
range of values of +/-2,147,483,647.9999.
Numeric values can be assigned to programmable variables using the equal sign.
Any valid DMC-1000 function can be used to assign a value to a variable. For example,
V1=@ABS[V2] or V2=@IN[1]. Arithmetic operations are also permitted.
To assign a string value, the string must be in quotations. String variables can contain up to six
characters which must be in quotations.
Variable values may be assigned to controller parameters such as PR or SP.
Examples - Assigning values to variables
Instruction Interpretation
POSX=_TPX Assigns returned value from TPX command to variable POSX.
SPEED=5.75 Assigns value 5.75 to variable SPEED
INPUT=@IN[2] Assigns logical value of input 2 to variable INPUT
V2=V1+V3*V4 Assigns the value of V1 plus V3 times V4 to the variable V2.
VAR="CAT" Assign the string, CAT, to VAR
PR V1 Assign value of variable V1 to PR command for X axis
SP VS*2000 Assign VS*2000 to SP command
Displaying the value of variables at the terminal
Variables may be sent to the screen using the format, variable=. For example, V1= , returns the value
of the variable V1.
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
To Next Page
Loading...
Need help?
General
