Keywords And Coupling Characteristics - Siemens SINUMERIK 840D sl Function Manual

The following axis position results from the overlay (summation) of the dependent motion
components (FA
the leading axes, and of the independent motion component (FA
FA
Total
The motion components of the following axis are calculated as follows:
Dependent motion component of leading axis 1:
Dependent motion component of leading axis 2:
Independent motion component of the following axis:
Following axis overlay
The overlay of dependent and independent motion components of the following axis is called
following axis overlay.
The independent motion component of the following axis can be programmed with the full
range of available motion commands.
5.5.2.2

Keywords and coupling characteristics

Keywords
Programming is done via language commands, e.g. coupled motion with TRAILON(X,Y,2).
Keywords replace the language commands in generic coupling.
This has the following advantages:
• Coupling characteristics can be programmed individually (see following example).
• Programming of multiple couplings can be done in one block (since keywords do not
require their own block).
Advantage: Reduction of work off time
Example:
The properties set with the existing coupling call TRAILON(X,Y,2)(following axis, leading
axis and coupling factor) are defined in the generic coupling with the following keywords:
CPON=(X1) CPLA[X1]=(X2) CPLNUM[X1,X2]=2
CPON=(X1)
CPLA[X1]=(X2)
CPLNUM[X1,X2]=2
Special Functions
Function Manual, 09/2011, 6FC5397-2BP40-2BA0
and FA
DEP1 DEP2
= FA + FA + FA
Cmd DEP1
Switch on coupling to following axis X1.
Define axis X2 as leading axis.
Set numerator of the coupling factor to 2.
), which result from the individual coupling relationships to
DEP2
M3: Coupled axes
5.5 Generic coupling
) of the following axis:
Cmd
FA = (LA - SynPosLA
DEP1 1
FA = (LA -SynPosLA
DEP2 2
FA
Cmd
) * KF
1 1
) * KF
2 2
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