
B-63783EN-1/01 11.PROGRAM COMMAND
- 1205 -
- Absolute/incremental programming
One of the following indexing positions is used, depending on bit 3
(G90) of parameter No. 7602:
0: Value according to an absolute/incremental G code (G90/G91)
1: Absolute value at all times
An indexing position assumes a positive value for the counterclockwise
direction, and a negative value for the clockwise direction.
0°
-45°
+60°
Command value from A to B (when paramete
G90 (bit 3 of parameter No. 7602) = 0)
G90 B-45.0; or
G91 B-105.0;
B
Fig. 11.8 (d) Absolute/Incremental Programming
- Indexing direction
If a value other than 0 is set in the M code for specifying negative
direction rotation (parameter No. 7632), movement in the negative
direction is made only when a move command is specified together
with the M code. In this case, movement is performed in the negative
direction, regardless of whether absolute/incremental programming is
used.
If 0 is set in the M code for specifying negative direction rotation
(parameter No. 7632), the rotation direction in G90 mode is determined
by bit 4 (INC) of parameter No. 7602, as described below.
The rotation direction in G90 mode is
0: Not shortcut direction
1: Shortcut direction (The amount of movement is always less
than 180 degrees.)
For information about which is used, refer to the manual provided by
the machine tool builder.
- Minimum indexing angle
The minimum index table indexing angle set in parameter No. 7682 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 (PS0561) is issued.
- Feedrate
The table is always rotated around the indexing axis in rapid traverse
mode.
Dry run cannot be executed for the indexing axis.
- Index table clamping/unclamping
Before or after index table indexing axis movement, the index table is
automatically clamped or unclamped.