
15. PMC CONTROL FUNCTION
B–63833EN–1/02
946
[Classification] Output signal
[Function] The S value, specified in the CNC part program, is converted to the speed
output of the spindle motor that is required to control the connected
spindle. The converted value is sent to the PMC with twelve code signals,
in propotional to the spindle motor speed output.
The speed data, the final result of the CNC spindle control, is output to
the spindle motor after the spindle gear ratio, spindle speed override,
speed clamp, conversion of the surface speed into the spindle speed by the
constant surface speed control command, and other data have been
considered.
(See Section 9.3 for an explanation of the relationship between the CNC
spindle control and the speed output to the spindle motor.)
Code signal
0
4095
Maximum spindle
motor speed
(Speed output to the
spindle motor)
0 min
–1
#7
3705
#6
SFA
#5
NSF
#4
EVS
#3 #2 #1 #0
ESF
ESF
[Data type] Bit
ESF When the spindle control function (S analog output or S serial output) is
used, and the constant surface speed control function is used, or bit 7
(GTT) of parameter No. 3705 is set to 1:
0 : S codes and SF are output for all S commands.
1 : S codes and SF are not output for an S command in constant surface
speed control mode (G96 mode) or for an S command used to specify
maximum spindle speed clamping (G50S–––;).
Twelve code signals
corresponding to the S
value R01O to R12O
<G036#0 to G037#3>