Siemens SINAMICS Configuration Manual page 155

Possible drive units:
● CU320-2 PN
The CBE20 in the CU320-2 PN of the SINAMICS contains the "PN Gate" function (p8835 =
2). The PN Gate represents the controller in the sense of PROFINET. It covers a standard
PROFINET network.
The CBE20 (port 4) is connected via the standard Ethernet interface of the machine control.
The controller supplies the PROFINET controller in the CBE20 with the content required for
all the I/O data cyclically and in a compact form in one or more Ethernet telegrams. For this
purpose, a driver (part of the PN Gate) is used on the controller for the communication with
the CBE20.
The CBE20 then distributes the I/O data to each individual device in the PROFINET network
with one telegram in each case - both IRT and RT telegrams.
Figure A-22
Industrial Security
Configuration Manual, 08/2017, A5E36912609A
Schematic representation of SINAMICS PROFINET Gate (in short: PN Gate)
Communication
A.1 Communication
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