
B-63943EN-1/02 11.SPINDLE SPEED FUNCTION
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#7 #6 #5 #4 #3 #2 #1 #0
MPA
3706
GTT MPA
# 2 MPA If a spindle is to be selected using a P command (with bit 3 (MPP) of
parameter No. 3703 set to 1) in multi-spindle control, and a P
command is not specified together with an S command:
0: The alarm (PS5305) is issued.
1: The last P specified by S_ P_; (by S_ P_; specified for the path in
case of a multi-path system) is used. If P is not specified even
once after power-up, the value of parameter No. 3775 is used.
NOTE
This parameter is valid only when bit 3 (MPP) of
parameter No. 3703 is set to 1.
# 4 GTT Selection of a spindle gear selection method
0: Type M.
1: Type T.
NOTE
1 M type
The gear selection signal is not input. The CNC
selects a gear based on the speed range of each
gear set by a parameter beforehand according to S
codes, and the selected gear is posted by
outputting the gear selection signal. Moreover,
the spindle speed matching the gear selected by
the output gear selection signal is output.
T type
The gear selection signal is input. The spindle
speed matching the gear selected by this signal is
output.
2 When the constant surface speed control option is
selected, type T is selected, regardless of whether
this parameter is specified.
3 When type T spindle gear switching is selected, the
following parameters have no effect:
No.3705#2(SGB), No.3751, No.3752,
No.3705#1(GST), No.3705#3(SGT), No.3761,
No.3762, No.3705#6(SFA), No.3735, No.3736
On the other hand, parameter No. 3744 becomes
usable.