Siemens SINAMICS S120 Series

Communication
Function Manual, 12/2018, 6SL3097-5BD00-0BP0
183
Communication via Ethernet/IP (EIP)
7
7.1 Overview
EtherNet/IP (EIP) is a realtime Ethernet, and is mainly used in automation technology.
The EtherNet Industrial Protocol (EtherNet/IP) is an open standard for industrial networks.
EtherNet/IP is used to transmit cyclic I/O data and acyclic parameter data. EtherNet/IP was
developed by Rockwell Automation and the Open Device-Net Vendor Association (ODVA
(https://www.odva.org/Technology-Standards/EtherNet-IP/Overview)), and standardized in
the series of international IEC 61158 standards. EtherNet/IP uses the basis technology of
Ethernet TCP/IP, which has been well proven in practice. Ethernet twisted-pair cables or
fiber-optic cables are used as data transmission medium. The CIP protocol (Common
Industrial Protocol) – known from DeviceNet and ControlNet – is used as application
protocol.
General information about communication
Communication via EIP requires the following interfaces:
● The Ethernet interface (X1400) of the Ethernet CBE20 option board
● The onboard PROFINET interface (X150) at the CU320-2 PN and CU310-2 PN Control
Units
The interfaces are either individually available at the different Control Units, or together at
one Control Unit (e.g. at a CU320-2 PN with CBE20).
The following table provides an overview of the configurable Control Units and interfaces that
are available for communication via EIP.
Table 7- 1 Configurable Control Units and interfaces
Control Unit
EIP via X150
EIP via X1400 (CBE20)
CU320-2 PN Yes No
CU320-2 PN with CBE20 (optional)
Yes
Yes
CU310-2 PN
Yes
No
CU320-2 DP
with CBE20
No
Yes
Independent of the configuration, only one interface can be assigned for communication via
EIP. A simultaneous connection via the interfaces X150 and X1400 is not possible and is
acknowledged with alarm A08555(1).