Communication Via Sinamics Link; Basic Principles Of Sinamics Link - Siemens SINAMICS DCM Operating Instructions Manual

10.4

Communication via SINAMICS Link

10.4.1

Basic principles of SINAMICS Link

SINAMICS Link enables data to be directly exchanged between several Control Units
CU320-2 DP or CUD, which for this purpose must be equipped with the CBE20
supplementary module. Other nodes cannot be integrated into this communication. Possible
applications include e.g.:
● Torque distribution for n drives
● Setpoint cascading for n drives
● Load distribution of drives coupled through a material web
● Master/slave function for infeed units
● Links between SINAMICS DC MASTER and SINAMICS S120
Send and receive data
The most frequently used node comprises a drive unit with a CU and a number of connected
drive objects (DOs). A telegram of a SINAMICS Link has space retainers for 16 process data
(PZD). Each PZD is precisely one word long. Slots that are not required are filled with zeros
0 1 2
SINAMICS Link
Every node can send a telegram with 16 PZD. A drive object can receive up to 16 PZD from
every other DO of the connected nodes as long as the transferred data within a telegram
does not exceed 16 words. Single words and double words can be sent and received.
Double words require 2 consecutive PZDs. It is not possible to read in your own send data.
Transmission time
A transmission time of 3.0 ms is possible when using SINAMICS Link (for a controller cycle,
max. 0.5 ms; bus cycle, 2.0 ms).
SINAMICS DCM Control Module
Operating Instructions, 06.2010, C98130-A7067-A1-02-7619
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10.4 Communication via SINAMICS Link
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Descriptions of functions
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