11. PROGRAM COMMAND
B–64113EN–1/01
778
B axis manual feed selection signal +Jb*
1
<G100>
B axis position control servo ON
B axis unclamp signal BUCLP<F061#0>
B axis unclamp completion signal *BEUCP<G038#6>
B axis rotation
B axis deceleration signal DECb*
1
<X009>
B axis return completion signal ZPb*
1
<F094>
B axis clamp signal BCLP<F061#1>
B axis clamp completion signal *BECLP<G038#7>
*1: “b” express the control axis number for B axis
Fig. 11.10 (c) Manual reference position return of B axis (type A)
Type A differs from type B in the timing of the servo on/off signal.
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.
When the B–axis is clamped with shot pins, the mechanism can be
indexed at only a limited number of positions. The minimum indexing
angle can be specified in parameter No. 5512. If an angle is not a multiple
of this minimum indexing angle, then alarm No. 135 is issued.
The direction of rotation can be set to one of the following.
– The direction with the shorter travel distance (INC, bit 3 of parameter
No. 5500)
– Direction specified with a command
– The positive direction. Only when a particular M code is specified in
the same block, the axis rotates in the negative direction (parameter
No. 5511).
Setting G90, bit 4 of parameter No. 5500, specifies absolute
programming, and override the G90/G91 G–codes.
The index table function can be temporarily disabled, using the ITI
parameter (bit 0 of parameter No. 5501) without turning the power off and
on again. When the function is disabled, manual operations (such as jog
feed, incremental feed, and handle feed) can be performed on the index
table axis even if the index table option is enabled.
Type A and Type B
Minimum indexing angle
Direction of rotation
Absolute/incremental
programming
Disabling the index table
function