Rockwell Automation 8520-ARM2 9/Series CNC AMP Reference Manual Documentation Set - Manual (Page 622)

Angled Wheel Parameters
Chapter 35
35-10
Function
This parameter is available for both standard and angled-wheel cylindrical
grinders only. Define the microfeed amount for the G89 and G89.1
multifeed plunge grinding with blend cycles using this parameter.
The microfeed feature is enabled through PAL (see $MFENA in your
9/Series PAL reference manual). When a microfeed is enabled for the G89
cycle, the endpoint of the final plunge depth is extended by the amount you
enter as the Micro-feed Increment.
@F
@E
@,F
R
I
Q
Rapid Moves
Start Point
X
@,F Micro-Feed
Normal Mode Plunge Two-Step Mode Plunge
@F
@E
@,F
R
I
Q
Start Point
X
Micro-Feed
Once enabled a skip signal can abort any portion of the fine-feed or
microfeed not completed. Refer to your 9/Series Grinder Operation and
Programming manual for details on how the G89 grinder cycle operates.
The microfeed value is an incremental distance. It is always a radius value
regardless of the current mode of the control. Enter the maximum
allowable distance the fine-feed portion of the G89 cycle can extend. If
this depth is reached before the control receives the skip signal, the dwell
and/or blend is performed and no offset table modification is made.
Axis Parameter Number
All [616]
Range
0 to 100.00000 in.
or
0 to 2540.00000 mm
Notes
This is a global parameter. The value set here applies to all axes.
35.7
Microfeed Increment