Rockwell Automation 8520-GUM 9/Series CNC Grinder Operation and Programming Manual Documentation Set - Manual (Page 562)

Surface Grinding Fixed Cycles
Chapter 16
16-12
F - cross and plunge pick feedrate.
The feedrate entered here is for the cross and plunge axes. It must be within
the range of legal F words defined for your system. If no value is entered
for this, then the last F word executed in the part program is used as the
cross and plunge pick feedrate.
This parameter is the system F word. Programming it here alters the
feedrate for any subsequent axis motion. Programming F0 selects the
rapid feedrate.
E - reciprocation feedrate.
The feedrate entered here is for the reciprocating axis. It must be within
the range of legal F words defined for your system. Programming a value
of zero with the E parameter is illegal and an error results. If the E
parameter is not programmed, then the F parameter value is used.
This parameter is “program modal,” meaning that it needs to be
programmed only once in a part program. Any subsequent surface
grinding blocks (G81 -- G86) use a previously programmed value if a new
value is not programmed.
P - dress program number.
The number entered here must be a legal program number (a program that
has been saved as a subprogram using the O word followed by a number of
up to five digits). This dress program is used for the pre-dress and/or
auto-dress operation and is executed the number of times defined by the D
parameter.
If the surface grinding cycle block calls for a pre-dress operation (G81.1 to
G86.1), then the first dress program execution occurs before the actual
surface grinding cycle begins, regardless of the number entered for the D
parameter.
This parameter is “program modal,” meaning that it needs to be
programmed only once in a part program. Any subsequent grinding cycle
blocks (G81 -- G86) use a value from a previous grinding cycle block if a
new value is not programmed.
Important: It is the programmer’s responsibility to make sure that the
dress program can be executed safely from the reciprocation reversal
points.