TIME —
Fig. 2.3
Rapid traverse rate and the acceleration /decel-
eration constant of rapid traverse rate can be
set by parameter. ( #6280 to #6287)
As shown in the following operation, the two–step
linear acceleration and deceleration can be spec-
ified. (independent of each axis) (See Fig. 2.4. )
o Cutting feed (GO1 to G03)
v
P
G00
.———
VELOCITY
t
TIME —
Fig. 2.4
Feedrate time constants are set at 2 msec inter-
vals and feedrate bias is set at 2kpps intervals
by parameters. ( #6092, #6093)
Note : The automatic acceleration /deceleration
parameters are set to the optimum values for the
respective machines.
Do not change the setting
unless it is required for special application.
2.5
SPINDLE-SPEED FUNCTION (S-FUNCTION)
2.5,1 S 2-DIGIT PROGRAMMING
(SPECIAL SPECIFICATIONS)
The spindle speed is specified by two digits fol-
lowing the address S (S00 to S99) .
For each S code and its corresponding spindle
speed (r/rein), refer tO the machine tool builder’s
manual.
When a move command and an S code are issued
in a block, execution will depend on the machine
tool design and construction (Whether the S com-
mand is executed together with the move com–
mand or after the completion of tool movement) .
Refer to the machine tool builder’s manual.
Once specified,
S-code is modal and effective
until the next S-code.
When the spindle stops at
M05 (spindle stoD) ,
S-command is stored in
memor~ of the u~it.
EXAMPLE
GOO S11 M03 ;
. . . S command
Spindle CW
x.. . z.. . ;
GO1 Z.. . F.. . ;
1
GOO X.. . Z.. . M05 ;
. . c Spindle stop
1
..-M03 ;
x.. . z.. . ;
GO1 Z.. . F.. . ;
S22 ;
x
. . .
z.. . F.. .
Note :
The two-digit
machine when
is issued.
Sll:
Effective
Sll:
Effective
S22: Effective
BCD output is sent to the
S and two-digit command
2.5.2 S4-DIGIT
PROGRAMMING AT
(1) Four digits following S (S ❑ ❑ ❑ ❑ ) are used
to specify the spindle speed in r/rein.
(2) When S command is given in a block together
with M03 (spindle forward running) or the
M04 (reverse running) , the control
proceeds
to the next block after the spindle speed
reaches the speed given by the S code. For
details, refer to the machine tool builder’s
manual.
EXAMPLE
S1OOO M03,
SPEED
s
1000 FUMIN
SYNCHRONIZATION
1-
———— . .
I
I
~
ACTUAL SPINDLE
I
SPEED
I
u
t
START OF THE BLOCK
13
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