
B–64112EN/01
17. MEASUREMENT FUNCTIONS
NC FUNCTION
181
n blocks with either of P1 to P4 following G31 commanded, the
coordinate value where skip signals (4 types) were input is stored in the
custom macro variables, and at the same time, the remaining movement
of the block is skipped. It is also possible to skip the remaining dwell with
the skip signal by parameter, in a block where: G04 is commanded
(dwell).
Parameters decide which skip command or dwell command is valid to
which of the four skip signals. The skip signal is not necessarily unique
to a single skip command or dwell command; it is also possible to set a
skip signal to multiple skip command or dwell commands.
Delay and error of skip signal input is 0–2 msec at the NC side (not
considering those at the PMC side).
This high-speed skip signal input function keeps this value to 0.1 msec
or less, thus allowing high precision measurement. This signal is
connected directly to the NC; not via the PMC.
With the motor torque limited (for example, by a torque limit command,
issued through the PMC window), a move command following G31 P99
(or G31 P98) can cause the same type of cutting feed as with G01 (linear
interpolation).
Skip operation is performed when the motor torque reaches the limit,
when the tool is pushed back for example, during cutting feed.
For details of how to use this function, refer to the manuals supplied by
the machine tool builder.
G31 P99 _ F_ ;
G31 P98 _ F_ ;
G31 : One–shot G code (G code effective only in the block in which
it is issued)
P99 : Skip operation is performed when the motor torque reaches
the limit or the skip signal is input.
P98 : Skip operation is performed only when the motor torque reaches
the limit (regardless of the skip signal).
IP
IP
17.2
MULTI-STEP SKIP
FUNCTION
(G31 P1 - G31 P4)
17.3
HIGH-SPEED SKIP
SIGNAL INPUT
17.4
TORQUE LIMIT SKIP
(G31 P99, G31 P98)
(T series)
T series
Format