B–63610EN/01
4. DESCRIPTION OF PARAMETERS
167
NOTE
For the T series, this parametar is enabled when bit 4 (EVS)
of parameter No.3705 is set to 1.
For the M series, SF is not output:
(1) For an S command used to specify maximum spindle
speed clamping (G92S–––;) in constant surface speed
control mode
(2) When bit 5 (NSF) of parameter No.3705 is set to 1
GST The SOR signal is used for:
0 : Spindle orientation
1 : Gear shift
NOTE
If the function of constant surface speed control or bit 4
(GTT) of parameter No. 3706 is specified, this parameter is
invalid.
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.
NSF If the function of constant surface speed control is specified or if bit 4
(GTT) of parameter No. 3706 is set to 1 and when an S code is specified,
0 : SF is output.
1 : SF is not output.
SFA The SF signal is output:
0 : When gears are switched.
1 : Irrespective of whether gears are switched.