The format for the g84 cycle is as follows – Rockwell Automation 8520-GUM 9/Series CNC Grinder Operation and Programming Manual Documentation Set User Manual
Page 594

Cylindrical Grinding Fixed Cycles
Chapter 17
17-20
The format for the G84 cycle is as follows:
G18;
G84X__I__Z__Q__L__F__E__P__D__;
Table 17.D summarizes the G84 cycle parameters. For a detailed
description of these parameters, see the text below and page 17-9.
Table 17.D
G84 Cycle Parameters
Parameter:
Definition:
Default Value:
Possible Value:
Plane axis 1
1
plunge depth
value must be programmed
abs. or inc.
Plane axis 2
3
last plunge point
none (plunge at start only)
abs. or inc.
Plane axis 2 integrand
3
dither amount
zero
inc. only
Q
3
plunge shift
zero
inc. only
L
3
number of spark-out passes or revolutions
zero
zero to 999
F
2
plunge feedrate
last feedrate programmed
valid F word
E
3
dither feedrate
plunge feedrate
valid F word
P
3 for G84 2 for G84.1
dress program number
from last cycle programmed
valid program number
D
3
number of auto-dress executions
zero
zero to 999
1
must be programmed
2
must have been programmed in some previous block if omitted
3
optional
Figure 17.5 shows the axis motions that make up the G84 multi-pass face
grinding cycle. This figure assumes that the ZX plane (G18) is active.
17.6
G84 or G84.1 Multi-pass
Face Grinding (Axis 1)