Siemens sinumerik 840D sl Function Manual page 275

Figure 2-6
Deactivation
A master value coupling is deactivated with the model language command for:
• Axis master value coupling
Special functions: Axis Couplings and ESR (M3)
Function Manual, 11/2006, 6FC5397-2BP10-2BA0
Activating master value coupling
LEADOF(FA, LA)
– FA=following axis, as GEO axis name, channel or machine axis name (X,Y,Z,...).
– optionally: LA=leading axis, as GEO axis name, channel or machine axis name
(X,Y,Z,...).
Software axis is possible:
MD30130 $MA_CTRLOUT_TYPE[n] (setpoint output type)
Example: LEADOF(Y,X) FA=Y, LA=X
When the axis master value coupling is deactivated, the following axis becomes the
command axis and a stop command is generated implicitly for the following axis. The
stop command can be overwritten by another command with a synchronous action.
Note
Activating and deactivating the axis master value coupling with LEADON, LEADOF is
permissible both in the parts program and in synchronous actions.
References:
/FB3/ Function Manual Special Functions; Synchronous Actions (S5)
Detailed description
2.3 Master value coupling
55