Siemens Sinamics S120 Function Manual page 576

Communication
10.1 Communication according to PROFIdrive
● The slaves synchronize their speed and/or current controller cycle with the position
● The speed setpoint is specified by the master.
Structure of the data cycle
The data cycle comprises the following elements:
1. Global Control telegram (PROFIBUS only)
2. Cyclic part
3. Acyclic part
4. Reserve (PROFIBUS only)
574
controller cycle on the master.
Figure 10-14 Overview of "Motion Control with PROFIBUS" (example: master and 3 slaves)
– Setpoints and actual values
– Parameters and diagnostic data
– Token passing (Token Holding Time, TTH).
– For searching for a new node in the drive line-up (GAP)
– Waiting time until next cycle
Function Manual, (FH1), 01/2012, 6SL3097-4AB00-0BP2
Drive functions