Omron SYSMAC CJ Series, Operation Manual

Page: 273 / 371

All BASIC commands Section 4-2
261
4-2-255 WA
/i
4-2-256 WAIT IDLE
/i
Type System command
Syntax WA(time)
Description The WA command pauses program execution for the number of milli-
seconds specified for time. The command can only be used in a pro-
gram.
Arguments • time
The number of milliseconds to hold program execution.
Example The following lines would turn ON output 7 two seconds after turning off
output 1.
OP(1,OFF)
WA(2000)
OP(7,ON)
See also N/A
Type System command
Syntax WAIT IDLE
Description The WAIT IDLE command suspends program execution until the base
axis has finished executing its current move and any buffered move.
The command can only be used in a program.
WAIT IDLE works on the
default basis axis (set with BASE ) unless AXIS is used to specify a tem-
porary base axis.
Note: The execution of
WAIT IDLE does not necessarily mean that the
axis will be stationary in a servo motor system.
Arguments N/A
Example MOVE(1000)
WAIT IDLE
PRINT "Move Done"
The print statement is printed at the end of the movement.
Example MOVE(1000)
WAIT UNTIL MTYPE=0
PRINT "Movement finished"
The print statement is printed, most of the times BEFORE the move-
ment starts, and sometimes, when the movement is finished.
Explanation Motion programs and motion sequence work in parallel and unsynchro-
nized. One complete cycle can occur before the movement is loaded
into the buffer. The program executes
MOVE(1000) but the movement
is not loaded to the buffer until the start of the next "motion sequence"
so when you check
MTYPE=0 , it is 0 because the movement HAS NOT
STARTED YET, not because it has finished.
See also AXIS , WAIT LOADED .
Note WAIT IDLE is a command specifically designed to wait until the previous movement
has been finished so, it handles the delay from when the previous command is exe-
cuted in the program until the command is correctly loaded in the motion buffer.