Siemens SINUMERIK 828D Programming Manual page 521

Syntax
LEADON(FAxis,LAxis,n)
LEADOF(FAxis,LAxis)
or deactivation without specifying the leading axis:
LEADOF(FAxis)
The master value coupling can be activated and deactivated both from the part program and
during the movement from synchronized actions, see section "Motion synchronous actions" .
Significance
LEADON
LEADOF
Faxis
Laxis
n
$SA_LEAD_TYPE
Deactivate master value coupling, LEADOF
When you deactivate the master value coupling, the following axis becomes a normal
command axis again!
Axial master value coupling and different operating states, RESET
Depending on the setting in the machine data, the master value couplings are deactivated
with RESET.
Example of master value coupling from synchronous action
In a pressing plant, an ordinary mechanical coupling between a leading axis (stanchion
shaft) and axis of a transfer system comprising transfer axes and auxiliary axes is to be
replaced by an electronic coupling system.
It demonstrates how a mechanical transfer system is replaced by an electronic transfer
system. The coupling and decoupling processes are implemented as static synchronized
actions.
From the leading axis LV (stanchion shaft), transfer axes and auxiliary axes are controlled as
following axes that are defined via curve tables.
Following axes
X feed or master value axis
YL closing or transverse axis
ZL lifting axis
U roll feed, auxiliary axis
V guide head, auxiliary axis
W greasing, auxiliary axis
Job planning
Programming Manual, 07/2010, 6FC5398-2BP40-0BA0
9.3 Axial leading value coupling (LEADON, LEADOF)
Activate master value coupling
Deactivate master value coupling
Following axis
Leading axis
Curve table number
Switching between setpoint and actual value coupling
Axis couplings
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