Fanuc Power Mate i-D/H Operator Manual

PROGRAMMING
(Common to Power Mate i–D and –H)
B–63174EN/03
4. INTERPOLATION FUNCTIONS
45
In a block specifying P1 to P4 after G31, the multistage skip function
stores coordinates in a custom macro variable when a skip signal
(4–point) is turned on. When the skip signals (4 points) are turned on in
a block containing Q1 through Q4 after G04, dwell operation can be
skipped. A skip signal from equipment such as a fixed–dimension size
measuring instrument can be used to skip programs being executed.
In plunge grinding, for example, a series of operations from rough
machining to spark–out can be performed automatically by applying a
skip signal each time rough machining, semi–fine machining,
fine–machining, or spark–out operation is completed.
Using this function refer to the manual supplied by the machining tool
builder.
Move command
G31 IP __ F __ P __ ;
G04 X (P)__ (Q__) ;
Dwell
_ : End point
F_ : Feedrate
P_ : P1–P4
X(P)_ : Dwell time
Q_ : Q1 – Q4
IP
IP
Multistage skip is caused by specifying P1, P2, P3, or P4 in a G31 block.
For an explanation of selecting (P1, P2, P3, or P4), refer to the manual
supplied by the machine tool builder.
Specifying Q1, Q2, Q3, or Q4 in G04 (dwell command) enables dwell
skip in a similar way to specifying G31. A skip may occur even if Q is
not specified. For an explanation of selecting (Q1, Q2, Q3, or Q4), refer
to the manual supplied by the machine tool builder.
Parameter Nos. 6202 to 6205 can be used to specify whether the 4–point
skip signal is used. Specification is not limited to one–to–one
correspondence. It is possible to specify that one skip signal correspond
to two or more Pn’s or Qn’s (n=1, 2, 3, 4). Also, bits 0 (DS1) to 3 (DS4)
of parameter No.6206 can be used to specify dwell.
CAUTION
Dwell is not skipped when Qn is not specified and
parameters DS1–DS4 (No.6206#0–#3) are not set.
4.5
MULTISTAGE SKIP
(G31)
Format
Explanations
Correspondence to skip
signals

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