
4. DESCRIPTION OF PARAMETERS
B–63610EN/01
178
3772 Maximum spindle speed
[Data type] Word
[Unit of data] min
–1
[Valid data range] 0 to 32767
This parameter sets the maximum spindle speed.
When a command specifying a speed exceeding the maximum speed of
the spindle is specified , or the speed of the spindle exceeds the maximum
speed because of the spindle speed override function, the spindle speed is
clamped at the maximum speed set in the parameter.
NOTE
1 For M series, this parameter is valid if the function of constant
surface speed control is provided.
2 When the constant surface speed control option is selected,
the spindle speed is clamped at the maximum speed,
regardless of whether the G96 mode or G97 mode is specified.
3 When 0 is set in this parameter, the speed of the spindle is
not clamped.
4 When spindle speed command control is applied using the
PMC, this parameter has no effect, and the spindle speed is
not clamped.
5 When the multi–spindle control option is selected (T series),
set the maximum speed for each spindle in the following
parameters:
Parameter No.3772: Sets the maximum speed for the first
spindle.
Parameter No.3802: Sets the maximum speed for the
second spindle.
3781
P code for selecting the first spindle in multi–spindle control
3782
P code for selecting the second spindle in multi–spindle control
NOTE
When this parameter has been set, the power must be
turned off before operation is continued.
[Data type] Word
[Valid data range] 0, 1 to 32767
If bit 3 (MPP) of parameter No. 3703 is set to 1, set the P code to select
each spindle under multi–spindle control. Specify the P code in a block
containing the S command.
Example) If the P code value for selecting the second spindle is set to 3,
S1000 P3;
causes the second spindle to rotate at S1000.