Siemens SINUMERIK 840D sl Programming Manual page 618

Axis couplings
9.5 Synchronous spindle
Optional parameters:
LS
ÜFS, ÜLS
Block change
Coupling type
POSFS
POSFS,POSLS
618
Designation of main spindle
Specification with spindle number: e.g. S2, S1
Transformation ratio between FS and LS.
TFS = numerator, TLS = denominator
Default: TFS/TLS = 1.0; specification of denominator optional
Block change behavior
The block change is:
"NOC"
Immediately
"FINE"
On reaching "Synchronism fine"
"COARSE"
On reaching "Synchronism coarse"
"IPOSTOP"
On reaching IPOSTOP; in other words, after
setpoint-based synchronism (default)
The block change behavior is effective modally.
Coupling type: Coupling between FS and LS
"DV"
Setpoint linkage (default)
"AV"
Actual value coupling
"VV"
Speed coupling
The coupling type is modal.
Angle offset between leading and following spindles
Range of values: 0° to 359.999°
Switch-off positions of the following and leading spindles
"The block change is enabled once POS
Range of values: 0° to 359.999°
, POS
FS LS
Programming Manual, 06/2009, 6FC5398-2BP20-0BA0
has been passed"
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