Siemens SINUMERIK 840D sl Programming Manual page 926

Work preparation
3.16 Axis couplings
<block change>:
<coupling type>:
<POSFS>:
<POSFS>,<POSLS>:
Examples
Working with leading and following spindles
Program code
N05 M3 S3000 M2=4 S2=500
N10 COUPDEF(S2,S1,1,1,"NOC","Dv")
...
N70 SPCON
N75 SPCON(2)
N80 COUPON(S2,S1,45)
...
N200 FA[S2]=100
N205 SPOS[2]=IC(-90)
N210 WAITC(S2,"Fine")
N212 G1 X... Y... F...
...
926
Block change behavior
The block change is:
Immediately
"NOC"
On reaching "Synchronism fine"
"FINE"
On reaching "Synchronism coarse"
"COARSE"
On reaching IPOSTOP; in other words, after setpoint-
"IPOSTOP"
based synchronism (default)
The block change behavior is effective modally.
Coupling type: Coupling between FS and LS
Setpoint linkage (default)
"DV"
Actual value coupling
"AV"
Speed coupling
"VV"
The coupling type is modal.
Angle offset between leading and following spindles
Range of val‐ 0°... 359.999°
ues:
Switch-off positions of the following and leading spindles
"The block change is enabled once POS
Range of val‐ 0°... 359.999°
ues:
Comment
Leading spindle = master spindle = spindle 1
Following spindle = spindle 2
Leading spindle rotates at 3000 rpm,
following spindle at 500 rpm.
Definition of the coupling (can also be config-
ured).
Bring leading spindle into closed-loop position
control (setpoint coupling).
Bring following spindle into closed-loop posi-
tion control.
On-the-fly coupling to offset position = 45 de-
grees.
Positioning speed = 100 degrees/min
Traverse with 90 degrees overlay in negative di-
rection.
Wait for "fine" synchronism.
Machining
, POS has been passed"
FS LS
Programming Manual, 12/2019, 6FC5398-2EP40-0BA0
NC programming