Rockwell Automation 8520 9/Series CNC Lathe - Manual (Page 326)

Coordinate System Offsets
Chapter 11
11-20
To use this feature, follow these steps:
1. Press <CYCLE STOP> or <SINGLE BLOCK> on the MTB panel to
interrupt automatic or MDI operation.
2. Turn on the switch to activate the jog offset feature (refer to
documentation provided by your system installer).
3. Change to manual mode, unless the control is equipped for the
“Jog-on-the-Fly” feature which allows jogging in automatic or MDI
modes (refer to documentation prepared by your system installer).
4. Jog the axes using any of the available jog types (with the exception
of homing) as described on page 4-1. The control adds the amount of
the jog move as an offset for each jogged axis.
5. Return to Automatic or MDI mode. When you press the <CYCLE
START> button, execution continues from the new tool location at
the jogged offset.
Important: When you move the jog offset, the axis position displays do
not change on the screen unless the currently active screen is displaying
absolute position coordinates. This is because the coordinate values in the
work coordinate system are being offset as the axes are being jogged.
The G92.1 command cancels these offsets:
G92 work coordinate system offset
G52 zero point offset
{SET ZERO} offset
Jog offset
Reset G54 - G59.3 coordinate system to default condition
It does not cancel an external offset. See page 11-10.
The G92.1 block also reestablishes the default work coordinate system as
set in AMP by your system installer. It cancels or activates the coordinate
system (G54-G59.3) as set in AMP to establish the default coordinate
system.
You must program the G92.1 block with no axis words. Axis words in a
G92.1 block generate an error. When you execute the G92.1 block, all
G92, G52, {SET ZERO}, and Jog offsets are canceled on all axes. You
cannot cancel the offsets on only one or more of the axes.
No axis motion takes place during execution of a G92.1 block. Axes
remain at their last programmed positions while the work coordinate
system adjusts to remove all offsets.
11.4.5
Canceling Coordinate
System Offsets (G92.1)