
B–63503EN–1/01
9. SPINDLE SPEED FUNCTION
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#7 #6 #5 #4 #3 #2 #1 #0
IMB4950 ESI TRV ISZ IDM IOR
[Data type] Bit
IOR Resetting the system in the spindle positioning mode
0 : Does not releases the mode.
1 : Releases the mode
IDM The positioning direction for the spindle using a M code is
0 : The positive direction
1 : The negative direction
ISZ When an M code for spindle orientation is specified in spindle
positioning:
0 : The spindle rotation mode is cleared and the mode is switched to the
spindle positioning mode, and spindle orientation operation is
performed.
1 : The spindle rotation mode is cleared and the mode is switched to the
spindle positioning mode but spindle orientation operation is not
performed.
TRV Direction of rotation of spindle positioning
0 : Normal
1 : Reverse
ESI Selection of a spindle positioning specification
0 : The conventional specificaion is used.
1 : The extended specificaion is used.
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, half–fixed angle
positioning based on M codes uses:
0 : Specification A
1 : Specification B