Rockwell Automation 8520-ARM2 9/Series CNC AMP Reference Manual Documentation Set - Manual (Page 405)

Letter Format Parameters
Chapter 17
17-7
Function
This parameter specifies the maximum number of digits that are permitted
to the left and to the right of the decimal point in the F-word format. This
parameter specifies the format of an F-word that is used to program a
feedrate in inches or millimeters per revolution.
Parameter Parameter
Number
F: IPR/MMPR Word Format [470]
Range
Selection Result
(a) 2.5 ipr 3.4 mmpr
(b) 1.5 ipr 2.4 mmpr
(c) 3.4 ipr 4.3 mmpr
(d) 2.4 ipr 3.3 mmpr
(e) 1.4 ipr 2.3 mmpr
(f) 4.3 ipr 5.2 mmpr
(g) 3.3 ipr 4.2 mmpr
(h) 2.3 ipr 3.2 mmpr
(i) 1.3 ipr 2.2 mmpr
Notes
This parameter is a global parameters; it applies to all axes and processes.
17.8
F: IPR/MMPR Word Format