Siemens SINUMERIK 840D sl Function Manual page 241

Meaning:
<FA>
<LA>
Example:
Program code
LEADOF(Y,X,1)
Note
Activating / deactivating the axis master value coupling with LEADON / LEADOF is permissible
both in the part program and in synchronous actions.
References:
Function Manual, Synchronized Actions
Coupling type
The coupling type is defined by the following axis-specific setting data:
SD43100 $SA_LEAD_TYPE[<LA>] (type of master value)
<LA>: Leading axis as geometry axis name, channel axis name or machine axis name (X, Y,
Z,...)
Value
0
1
2
Switch-over between actual and setpoint value coupling is possible at any time (preferably in
the idle phase).
Special Functions
Function Manual, 09/2011, 6FC5397-2BP40-2BA0
Following axis as geometry-, channel- or machine axis name (X, Y, Z,...)
Leading axis as geometry-, channel- or machine axis name (X, Y, Z,...)
Software axis is also possible:
MD30130 $MA_CTRLOUT_TYPE=0 (setpoint output type)
Comment
; Switching off of master value coupling between the leading
axis X and the following axis Y.
Meaning
Actual value coupling (this type of coupling must be used for external leading axes)
Setpoint coupling (default setting)
Simulated master value (note virtual axis, not evaluated for FA)
M3: Coupled axes
5.3 Master value coupling
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