
B–63833EN–1/02
9. SPINDLE SPEED FUNCTION
489
NOTE
The extended specification includes the following two
extensions:
D With the conventional specification, the number of M
codes for specifying a spindle positioning angle is always
6. With the extended specification, an arbitrary number
of such M codes from 1 to 256 can be selected by
parameter setting (See parameter No. 4964.)
D The maximum feedrate for spindle positioning (setting of
parameter No. 1420) can be extended from 240000 to
269000 (unit: 10 deg/min).
IMB When the spindle positioning function is used, semi–fixed angle
positioning based on M codes uses:
0 : Specification A
1 : Specification B
NOTE
In the case of semi–fixed angle positioning based on M
codes, three types of spindle positioning operations can
occur:
(1)The spindle rotation mode is cleared, then the mode is
switched to the spindle positioning mode.
(2)Spindle positioning is performed in the spindle
positioning mode.
(3)The spindle positioning mode is cleared, then the mode
is switched to the spindle rotation mode.
In the case of specification A:
Operations (1) to (3) are specified using separate M
codes.
(1)–Specified using M codes for performing spindle
orientation.
(See parameter No. 4960)
(2)–Specified using M codes for specifying a spindle
positioning angle. (See parameter No. 4962)
(3)–Specified using M codes for clearing spindle positioning
operation. (See parameter No. 4961.)
In the case of specification B:
When M codes for specifying a spindle positioning angle are
specified, operations (1) to (3) are performed successively.
(See parameter No. 4962.)