Siemens SINAMICS Configuration Manual page 205

● The maximum number of PZDs that can be received and sent also depends on the drive
object. The number of PZDs that can be evaluated corresponds to communication
according to PROFIdrive; however, for SINAMICS Link, it is limited to a maximum of
32 PZDs.
● If, as a result of a project download, parameters of the CBE20 are change, then alarm
A08531 is output. In this case, a POWER ON is required to activate the values.
Transmission time
With SINAMICS Link, a transmission time of up to 500 µs is possible (with a max. controller
cycle of 500 µs; synchronous bus cycle of 500 µs).
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):
● 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.
Industrial Security
Configuration Manual, 08/2017, A5E36912609A
Number of nodes/
project no.
64
16
12
4
PZD count
16
16
24
32
Communication
A.1 Communication
Bus cycle (ms)
1 or 2
0.5
0.5
0.5
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