
B-63494EN/02 11.APPLYCATION OF OTHER FUNCTIONS
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11.4.2 Specifications
Spindle positioning
Spindle positioning is performed as follows.
• Cancel the spindle rotation mode, which is used for turning with
the spindle rotating, and enter the spindle positioning mode.
• Position the spindle in the spindle positioning mode.
• Cancel the spindle positioning mode and enter the spindle
rotation mode.
Selecting a spindle positioning axis
The axis targeted for spindle positioning is the C-axis. The C-axis can
be in any ordinal position in control axes (parameter No. 1020), but
set the C-axis servo axis number (parameter No. 1023) to -1.
There is only one spindle positioning axis for each control path.
The spindle targeted for spindle positioning is the first spindle.
Switching to spindle positioning mode
Orientation is required when spindle positioning is performed for the
first time after the spindle motor is used as a normal spindle or when
spindle positioning is resumed after the spindle positioning is
suspended.
Orientation is the function for stopping the spindle at a fixed position.
The grid shift function can be used to shift the orientation position
from 0 to 360 degrees (parameter No. 4073).
Orientation can be specified by the M code set in parameter No. 4960.
The direction of orientation is set in RETSV (bit 4 of parameter No.
4000).
The position where orientation is completed is assumed as the
program zero point. However, the coordinate system setting (G50) or
automatic coordinate system setting can be used to change the
program zero point.
Positioning command
There are two types of spindle positioning: semi-fixed angle
positioning and optional angle positioning.