
B–63380EN/02
4. DESCRIPTION OF PARAMETERS
113
GST The SOR signal is used for:
0 : Spindle orientation
1 : Gear shift (Valid only when the M–type gear change mode is used)
SGB Gear switching method
0 : Method A (Parameters 3741 to 3743 for the maximum spindle speed
at each gear are used for gear selection.)
1 : Method B (Parameters 3751 and 3752 for the spindle speed at the gear
switching point are used for gear selection.)
SGT Gear switching method during tapping cycle (G84 and G74)
0 : Method A (Same as the normal gear switching method)
1 : Method B (Gears are switched during tapping cycle according to the
spindle speed set in parameters 3761 and 3762).
EVS When the spindle control function (Spindle analog output or Spindle
serial output) is used, S codes and SF are:
0 : Not output for an S command.
1 : Output for an S command.
NOTE
The output of S codes and SF for an S command in constant
surface speed control mode (G96), or for an S command
used to specify maximum spindle speed clamping
(G50S–––;) depends on the setting of bit 0 (ESF) of
parameter No.3705.
SFA The SF signal is output:
0 : When gears are switched.
1 : Irrespective of whether gears are switched.
#7
TCW
3706
#6
CWM
CWM
#5
ORM
ORM
#4
GTT
#3 #2 #1
PG2
PG2
#0
PG1
PG1TCW
[Data type] Bit
PG2 and PG1 Gear ratio of spindle to position coder
Namber of spindle revolutions
Number of position coder revolutions
Magnification PG2 PG1
1 0 0
2 0 1
Magnification=
4 1 0
8 1 1
GTT Selection of a spindle gear selection method
0: Type M.
1 : Type T.