Technical data
Configuration 
  CPU 317T: Technology Functions 
4-86  A5E00251798-03 
Position reference 
The desynchronization mode is set in the "Position reference" drop-down list: 
Setting Meaning 
Stop at desynchronization 
position 
Starts desynchronization at the desynchronization position. 
The desynchronization length is derived from dynamic data for a time-
based synchronization profile, and from the "Desynchronization length" 
parameter for a leading axis-specific synchronization profile. 
Desynchronization starts after this length has been passed. 
Stop before desynchronization 
position 
In this mode, desynchronization starts when the axis reaches the 
Desynchronization position. 
The position at which the desynchronization motion is started is 
determined by the dynamic data when operating with time-based 
synchronization profile, and by the "Desynchronization length" 
parameter when operating with leading axis-specific synchronization 
profile. 
Stop symmetrically to 
desynchronization position 
In this mode, desynchronization starts when the axis reaches the 
middle of the desynchronization length. The desynchronization motion 
starts before the axis reaches the desynchronization position and ends 
when it overtravels this position. 
Desynchronization starts based on the profile, with reference to the 
desynchronization length or dynamic settings. 
Most recent setting  Not applicable 
4.6.6 Monitoring functions 
The slave values and compensation at the following axis calculated at the 
synchronization object are monitored, with respect to the dynamic response of the 
following axis. Compensating motions will be generated accordingly. 
The current maximum limits for velocity and acceleration (and jerk) on the axis 
influence this monitoring process. 
If a motion can not be carried out, an attempt is made to follow the values as 
closely as possible with a compensatory motion specified by the maximum 
dynamic response values of the axis. The result is a setpoint error. 










