
13.PROGRAM COMMAND B-63943EN-1/02
- 1754 -
The figure below shows the timing chart for type-A manual reference
position return of the B axis.
B axis manual feed selection signal +J
α
B axis position control servo ON
B axis unclamp signal BUCLP
B axis unclamp completion signal *BEUCL
B axis rotation
B axis deceleration signal *DEC
α
B axis return completion signal ZP
α
B axis clamp signal BCLP
B axis clam
com
letion si
nal *BECLP
Fig. 13.9 (c) Manual reference position return of B axis time chart (type A)
- Type A and Type B
As described in the basic procedure, type A differs from type B in that
the servo used for B-axis position control is turned on or off at the
different timing.
Type A is suitable for a system in which the B-axis is clamped with
shot pins.
Type B is suitable for a system in which the B-axis is clamped with a
clutch.
- Minimum indexing angle
The minimum index table indexing angle set in parameter No.5512 is
used. An integral multiple of a set value can be specified as an
indexing angle. If a value other than an integral multiple is specified,
an alarm (PS1561) is issued.
- Indexing axis setting
Be sure to set a rotation axis as an index table indexing axis.
(Set bit 0 (ROTx) of parameter No. 1006 to 1.)
- Absolute/incremental programming
Setting G90, bit 4 of parameter No. 5500, specifies absolute
programming, and override the G90/G91 G-codes.