Operation
7.9 Communication via SINAMICS Link
SINAMICS DCP
312 Operating Instructions, 09/2019, A5E34382853K
Each transfer cycle, every SINAMICS Link node can send 1 telegram with 32 PZD. Each
node receives all of the telegrams that are sent. For each transfer cycle clock, a node can
select and process up to 32 PZD from all telegrams that have been received. Single words
and double words can be sent and received. You must write double words in two
consecutive PZDs.
Limitations:
● In a telegram, a PZD may only be sent and received once. If a PZD occurs more than
once in a telegram, then Alarm A50002 or A50003 is output.
● It is not possible to read in your own send data. An appropriate alarm is initiated. The
following alarms are possible:
– A50006: It is parameterized that own data sent can be received. This is not permitted.
– A50007: The send telegram word is larger than possible in the project.
– A50008: The receive telegram word is larger than possible in the project.
● 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
A transmission time of up to 1.5 ms is possible when using SINAMICS Link.
Bus cycle and number of nodes
A maximum of 64 participants can communicate with one another via SINAMICS Link. To do
so, set the maximum number of nodes with p8811 (project selection):
Number of participants /
project no.
8 32 0.5
In the non-synchronized mode, the bus cycle of the SINAMICS Link can be set with p8812[1]
to 500 µs, 1000 µs or 2000 µs.
After changing parameter p8811, p8812, p8835 or p8836, carry out a POWER ON to
transfer the settings.
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