Rockwell Automation 8520-GUM 9/Series CNC Grinder Operation and Programming Manual Documentation Set - Manual (Page 556)

Surface Grinding Fixed Cycles
Chapter 16
16-6
Reciprocation stops when an emergency stop condition occurs. No motion
occurs when the emergency stop is reset. If your control’s AMP is
configured such that the control is not reset after an E-STOP reset, then
typically reciprocation resumes with the next cycle start. This lets part
programs resume immediately without having to first restart reciprocation.
For details, see the documentation prepared by your system installer.
M00 blocks do not affect reciprocation.
The feedrate for the reciprocation motion is determined by the E or F
words as described below in order of priority:
the E word in the reciprocation block
the E word in a previous reciprocation block executed since the last end
of program (M02, M30, M99) or control reset
the F word in the reciprocation block
the F word in a previous block executed since the last end of program
(M02, M30, M99) or control reset
If there is no active E or F word feedrate, an error is generated as soon as
the reciprocation motion is commanded. Your PAL program ultimately
determines reciprocation axis speed and motion. See the documentation
prepared by your system installer.
Acceleration and deceleration for the reciprocating axis is always linear,
regardless of the ACC/DEC type selected for that axis in AMP.
You can determine (through PAL) whether block transitions are made after
the reciprocation axis reaches its in-position band (positioning mode) or
whether the control executes blocks regardless of the in-position band
(non-positioning mode). See the documentation prepared by your system
installer.
Crossover
A crossover consists of a series of reciprocation and cross pick moves that
cover the desired surface area. You can specify two cross pick increments
for the incremental surface grinding cycles (G83 and G84):
the cross pick at the primary reversal of the reciprocating axis and
the cross pick at the secondary reversal of the reciprocating axis.
The continuous surface grinding cycles (G85 and G86) use a continuous
cross feed move that begins at the very start of the reciprocating motion.