Rockwell Automation 8520-MUM 9/Series CNC Mill Operation and Programming Manual Documentation Set - Manual (Page 200)

Running a Program
Chapter 7
Running a Program
Chapter 7
7-18
Axis Inhibit, Dry Run, and Automatic operation can be interrupted using
any of the operations listed below. Execution may be resumed at the
interrupted location by pressing the <CYCLE START> button:
(1) Pressing <CYCLE STOP>
When the <CYCLE STOP> button is pressed, motion of the cutting tool
decelerates and stops, and the control stops automatic operation. If the
<CYCLE STOP> button is pressed during a dwell, the dwell is interrupted
and any remaining time/revolutions for the dwell are stored for later
execution.
(2) Execution of an M00 or M01 in a Part Program
M00 ---- the control stops automatic operation after it executes the
remaining commands in the M00 block.
M01 ---- if the OPTIONAL STOP condition is set to ON, the control stops
automatic operation after it executes the remaining commands in the M01
block. If the OPTIONAL STOP condition is set to OFF, the M01 is
ignored and the control continues executing the part program as normal.
The optional stop condition may be turned off or on using the Front Panel
feature, or through a switch installed by the system installer.
(3) Entering a Sequence Stop Number
To interrupt execution at a specific block in the part program, use the
sequence stop feature described in section 7.1.3. The control stops
automatic operation after it completes the commands in the designated
block.
(4) Feedhold Status
The system installer may have written PAL to allow the activation of a
feedhold state through the use of a button or switch. When activated the
control decelerates all moving axes to a feedrate of zero until the feedhold
state is deactivated. For details on using feedhold refer to documentation
provided by the system installer.