IMS MicroLYNX Quick Manual page 59

Global Flags and Variables are
declared outside of a program!
Local Flags and Variables are
declared within a program and
erased and re-declared with
program execution!
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FLG MY_FLG=1 'declare flag MY_FLG, set to 1
This example shows a global flag being declared. To view the state of
this flag, and any other user-defined flags enter:
PRINT UFLGS
The response from the terminal would be:
MY_FLG = G TRUE
The "G" would indicate that it is a global flag at a logic TRUE state.
If this were a local flag, the "G" would be replaced with an "L".
V A R [ D e f i n e U s e r V a r i a b l e ]
This instruction allows the user to declare a variable and set it to some value.
The naming conventions for a user-defined variables are the same as for user-
defined flags declared with the FLG instruction. These variables can be either
global (declared in immediate mode) or local (declared within a program). Local
variables are erased and re-declared when a program executed.
The following example is a short program that will declare a local variable
named "LENGTH", request an input from the user, then perform a relative
index the distance specified. It will then loop back to the beginning and request
input until the escape key is pressed.
PGM 200
LBL VAR_TEST
VAR LENGTH=0
PRINT "How far do I go?";
INPUT LENGTH
MOVR LENGTH
HOLD 2
PRINT "Went this far:", LENGTH
BR 200
END
PGM
I N P U T [ U s e r I n p u t R e q u e s t ]
This instruction allows for data to be entered into a variable from an external
device such as a terminal or an HMI through the serial port(s).
See VAR example above for usage example.
D E L A Y [ D e l a y P r o g r a m E x e c u t i o n ]
Delays program execution for a specified number of milliseconds.
For Example:
DELAY 1000
H O L D [ H o l d P r o g r a m E x e c u t i o n ]
The HOLD instruction differs from DELAY in that it suspends program
execution until a specified motion, velocity change, or position change com-
pletes. Typically, a "HOLD 2" will be issued following a MOVA or MOVR.
This instructs the MicroLYNX to suspend the program until the previously
instructed motion is complete.
'start program at address 200
'name the program VAR_TEST
'declare local variable LENGTH, set to 0
'request input length in munits
'index relative distanc defined by LENGTH
'suspend program until motion completes
'loop to beginning of program
'delay program execution for 1 second.
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