Siemens SINAMICS Configuration Manual page 114

Communication
A.1 Communication
PROFIBUS is tuned for high-speed, time-critical data communication at field level.
Note
PROFIBUS for drive technology is standardized and described in the following document:
PROFIdrive Profile Drive Technology
PROFIBUS User Organization e. V.
Haid-und-Neu-Strasse 7, D-76131 Karlsruhe
Internet: (http://www.profibus.com)
Note
Before synchronizing to the isochronous PROFIBUS, all of the drive object pulses must be
inhibited - also for those drives that are not controlled via PROFIBUS.
PROFIBUS interface: The cyclic PZD channel is deactivated when the CBE20 is plugged in!
NOTICE
Destruction of the CU320‑2 or other CAN bus nodes by connecting a CAN cable
Connecting a CAN cable to interface X126 of the CU320-2 can destroy the CU320‑2 or other
CAN bus nodes.
● Do not connect any CAN cable to the X126 interface.
Master and slave
● Master and slave properties
● Master
The following classes are differentiated:
– Master class 1 (DPMC1):
– Master class 2 (DPMC2):
● Slaves
With respect to PROFIBUS, the SINAMICS drive unit is a slave.
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Properties
As bus node
Send messages
Receive messages
Central automation stations that exchange data with the slaves in cyclic and acyclic
mode. Communication between the masters is also possible.
Examples: SIMATIC S7, SIMOTION
Devices for configuration, commissioning, operator control and monitoring during bus
operation. Devices that only exchange data with the slaves in acyclic mode.
Examples: Programming devices, human machine interfaces
Master
Active
Permitted without external re‐
quest
Possible without any restric‐
tions
Configuration Manual, 08/2017, A5E36912609A
Slave
Passive
Only possible on request by
master
Only receive and acknowledge
permitted
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