Rockwell Automation 8520-ARM2 9/Series CNC AMP Reference Manual Documentation Set - Manual (Page 402)

Letter Format Parameters
Chapter 17
17-4
Function
This parameter is set for lathe controls and grinder applications only.
For Lathe fixed cycles, it refers to the D-word programmed in these
compound turning routines:
G Code System
A B C Description
G71 G71 G73 O.D. & I.D. Roughing Routine
G72 G72 G74 Rough Facing Routine
G73 G73 G75 Casting/Forging Roughing Cycle
G76 G76 G78 Multi-Pass Threading Cycle
For grinder fixed-cycles, it refers to the number of dresses performed
during the cycle.
The D-word is used to define a depth of cut or incremental shift in these
cycles (refer to the specific cycle description in your programming and
operation manual).
This parameter specifies the maximum number of digits that are permitted
to the left and to the right of the decimal point in the D-word format when
programming in inch or metric modes.
Parameter Parameter
Number
D: Word Format [461]
Range
Selection Result Selection Result
(a) 3.4 inch and 4.3 metric (g) 2.4 inch and 3.3 metric
(b) 3.5 inch and 4.4 metric (h) 2.5 inch and 3.4 metric
(c) 4.3 inch and 5.2 metric (i) 2.6 inch and 3.5 metric
(d) 4.4 inch and 5.3 metric (j) 3.3 inch and 4.2 metric
(e) 5.3 inch and 6.2 metric (k) 4.2 inch and 5.1 metric
(f) 2.3 inch and 3.2 metric (l) 5.2 inch and 6.1 metric
Notes
This is a global parameter; it applies to all axes and processes.
17.3
D: Word Format