Siemens SINAMICS S120, Function Manual

Page: 890 / 1094

Communication
11.6 Communication via SINAMICS Link
Drive functions
890
Function Manual, 11/2017, 6SL3097-4AB00-0BP5
Bus cycle and number of nodes
You can operate the bus cycle of the SINAMICS Link with the current controller cycle, either
synchronized or non-synchronized.
● Synchronized operation is set with p8812[0] = 1. A maximum of 64 nodes can then
communicate with one another via SINAMICS Link. To do so, set the maximum number
of nodes with p8811 (project selection):
Number of nodes/
project no.
PZD count Bus cycle (ms)
64 16 1 or 2
16 16 0.5
12 24 0.5
4 32 0.5
● In the non-synchronized mode, the bus cycle of the SINAMICS Link can be set with
p8812[1] to 1000 µs or 2000 µs. Then, via p8811, a maximum of 64 nodes can
communicate via SINAMICS Link.
After changing parameter p8811, p8812, p8835 or p8836, carry out a POWER ON to
transfer the settings.
11.6.2 Topology
Only a line topology with the following structure is permitted for SINAMICS Link. You must
manually set the parameters in the expert lists of the Control Units and drive objects. To do
this, use the STARTER commissioning tool.
Figure 11-51 Maximum topology