Yaskawa YASNAC PC NC Programming Manual - Manual (Page 191)

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YASNAC PCNC Programming Manual Chapter 4: Enhanced Level Commands
1. If a C command is specified, the following operation is executed when the cut level
reaches the C-point level.
•
The spindle stops and then starts rotating in the reverse direction; Z-axis retracts to
the R-point level at the specified feedrate.
•
The spindle stops.
•
The spindle starts rotating in the forward direction; Z-axis is fed to “C + Q” level
at the specified feedrate.
2. The E command is valid for the retraction operation from the C-point level to the R-point
level and from the Z-point level to the R-point level. It is not valid for the Z-axis retrac-
tion by “d”.
• Variable pitch command
Example of Programming
G93;
G184 (or G174) X± • • Y± • • Z± • • R± • • W± • • I • • J • • K • • C • • P • • F • • E • • S • • L;
X • • Y • • • ;
G94;
G93/G94 Solid tap mode ON, G94: Solid tap mode OFF
G184/G174 Deep-hole solid tap, G174 Reverse deep-hole solid tap
X, Y Hole position (mm, inch)
Z
Distance from the R-point level to the bottom of the hole, or the position of
the hole bottom (mm, inch)
R R-point level (mm, inch)
W W-point return level (mm, inch)
I Initial value of feed distance (mm, inch)
J Decrement value of feed distance (mm, inch)
K Last value of feed distance (mm, inch)
P Dwell time at the Z-point level (bottom of the hole) (see)
F Thread pitch (mm/rev, inch/rev)
E Feedrate multiplication ratio for retraction to the R-point level
S Spindle speed (r/min)
L Number of repetitions
C C-point level (mm, inch)