Galil Motion Control CDS-3310, User Manual

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Chapter 7 Application Programming CDS-3310
Deallocating Array Space
Array space may be deallocated using the DA command followed by the array name. DA*[0]
deallocates all the arrays.
Input of Data (Numeric and String—Serial Port Only)
Input of Data
The command, IN, is used to prompt the user to input numeric or string data. Using the IN command,
the user may specify a message prompt by placing a message in quotations. When the controller
executes an IN command, the controller will wait for the input of data. The input data is assigned to
the specified variable or array element.
Example- Inputting Numeric Data
#A
IN "Enter Length",lenA
EN
In this example, the message “Enter Length” is displayed on the computer screen. The controller waits
for the operator to enter a value. The operator enters the numeric value which is assigned to the
variable, lenA. (
NOTE:
Do not include a space between the comma at the end of the input message
and the variable name.)
Example- Cut-to-Length
In this example, a length of material is to be advanced a specified distance. When the motion is
complete, a cutting head is activated to cut the material. The length is variable, and the operator is
prompted to input it in inches. Motion starts with a start button which is connected to input 1.
The load is coupled with a 2 pitch lead screw. A 2000 count/rev encoder is on the motor, resulting in a
resolution of 4000 counts/inch. The program below uses the variable len, to length. The IN command
is used to prompt the operator to enter the length, and the entered value is assigned to the variable
LEN.
Instruction Interpretation
#BEGIN LABEL
AC 800000
Acceleration
DC 800000 Deceleration
SP 5000 Speed
len=3.4 Initial length in inches
#CUT Cut routine
AI1 Wait for start signal
IN "enter Length(IN)", len Prompt operator for length in inches
PR len *4000 Specify position in counts
BGA Begin motion to move material
AMA Wait for motion done
SB1 Set output to cut
WT100;CB1 Wait 100 msec, then turn off cutter
JP #CUT Repeat process