YASKAWA MOTIONPACK-110 Descriptive Information page 95

4.5 S FUNCTION (Cont'd)
(2) Output
When the S code is programmed in the block within which a movement command
appears, sPeed command analog voltage is output to the spindle drive unit from the
Motionpack (axis module for the spindle) simultaneously with the movement command.
In addition, S code read signal (SF) is output in a delay of t ms. The delay time is set
in parameter #1100 as with the T code read signal.
MOVEMENT I I
COMMAND ',
t
SPINDLE !
SPEED t ms
COMMAND ,= _'
S-CODE READ I ! SIGNAL(SF)
MST _'_
COMPLETION
SIGNAL(FIN)
Fig. 4.36
NOTE
To operate the spindle, the spindle normal rotation signal (FRN), spindle
reverse rotation signal (RRN), and spindle stop signal (SSTP) are also
required. See Par. 9.2.2.
(3) Completion Signal
When t.h.e spindle reaches the speed indicated by the S signal on the spindle drive unit
and MST finish signal (FIN) is returned to the Motionpack, program execution shifts to
the next block. If the S code is programmed in the block within which the M or T code
appears, return the MST finish signal (FIN) after all conditions have been arranged in
addition to read of M code output signal, T code output signal.
(4) Effective Range
Once, the S command which is modal is programmed, it is effective until another S
command is given.
The S command value is held even if the spindle stop signal (SSTP) is returned,
the spindle stops, and output voltage from the Motionpack is disconnected.
Thus, if the spindle normal rotation signal (FRN) or spindle reverse rotation
signal (RRN) is input again, the spindle is started according to the previously given S
command value.
(5) To change the S command after the S axis starts, do not exceed the spindle speed range
for the selected spindle gear.
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