Siemens SINUMERIK 840D sl Programming Manual page 622

Axis couplings
9.5 Synchronous spindle
Define synchronized spindle pair
Configured coupling:
For the configured coupling, the leading and following spindles are defined in machine data.
The configured spindles cannot be changed in the part program. The coupling can be
parameterized in the part program using COUPDEF (on condition that no write protection is
valid).
User-defined coupling:
COUPDEF can be used to redefine or change a coupling in the part program. If a coupling is
already active, it has to be deleted first with COUPDEL before a new coupling is defined.
Define coupling COUPDEF
A coupling is defined in its entirety by:
COUPDEF(FS, LS, T
Following spindle (FS) and leading spindle (LS)
The axis names for the following spindle (FS) and the leading spindle (LS) are used to
identify the coupling uniquely. The axis names have to be programmed with every COUPDEF
operation. The other coupling parameters are modal and only have to be programmed if they
change.
Example:
COUPDEF(S2, S1)
Transformation ratio T
The transformation ratio is specified as a speed ratio between the following spindle
(numerator) and the leading spindle (denominator). The numerator must be programmed. In
the absence of a programmed value, the denominator is set to = 1.0.
Example: following spindle S2 and leading spindle S1, transformation ratio = 1/4 = 0.25.
COUPDEF (S2, S1, 1.0, 4.0)
622
, T
FS
T
FS/ LS
, block change behavior, coupling type)
LS
Programming Manual, 06/2009, 6FC5398-2BP20-0BA0
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