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Rockwell Automation GMLC Reference Manual User Manual

Page 348

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Publication GMLC-5.2 - November 1999

On Axis

311

When you select Moving Done in Wait for Axis mode, the current task
pauses until the selected physical or imaginary axis is done moving
(Move_status = 0).

See Move Axis for information on moving axes and Stop Motion for
information on stopping moves. See the Axis Locked and Axis Done
Conditions
chapter in this manual for further discussion of the moving
done status condition. See Move Axis, Time Lock Cam, and Stop Motion
for information on starting and stopping moves and cams.

Output Limited

You can use the output limited condition, in conjunction with the Motion
Settings block, to detect intended stall conditions on an axis, such as
moving or homing an axis to a hard stop.

For example, this GML sequence first sets the servo output limit to a low
value to limit the force applied to the stop, then jogs the axis at a low
speed and with low acceleration rates until a positive stop is detected
(servo output limited).

When you select Gearing
Opposite in:

The:

Wait for Axis mode

Current task pauses until the servo output of the selected
physical axis is clamped at the pre-defined servo output
limit as set in the Servo page of the selected axis Configure
Axis Use dialog box, or via a previous Motion Settings block
(Output_limit_status = 1).

If Axis mode

Program branches to the top (true) node if the servo output
of the selected physical axis is currently clamped at the
pre-defined servo output limit as set in the motion
controller’s machine setup menu or via a previous Motion
Setting block (Output_limit_status = 1).