Table 6-5 Connection
Pin Signal Signal Description
1 ETH_TX_P Transmit Data +
2 ETH_TX_N Transmit Data -
3 ETH_RX_P Receive Data +
4 – –
5 – –
6 ETH_RX_N Receive Data -
7 – –
8 – –
Screen Shield potential
LEDs of the RJ45 Terminals – Integrated Ethernet Interface (Port J)
The light-emitting diodes (LEDs) signal the operating state of the communication link. The operating states are
explained in the following table:
Integrated Ethernet
Interface (RJ45)
Signal Color Operating Status
LED 1 ETH_LED1_N Yellow Continuously lit: 100 Mbit
Not lit: 10 Mbit
LED 2 ETH_LED0_N Green Flashing: Telegram reception
Continuously lit: No communication
Ethernet COM Link (Port K) (Available only for Modular Devices)
The Ethernet connection to the CB202 module (plug-in module assembly with integrated power supply) is
realized using the RJ45 interface.
The RJ45 interface can be used exclusively for the connection of the CB202 plug-in module assembly. This
terminal is left unused when no CB202 plug-in module assembly is in use.
The light-emitting diodes (LEDs) signal the operating state of the communication connection. The operating
states are explained in the following table:
COM Link (RJ45)
Signal Color Operating State
LED 1 CL2_LED0_N Yellow Flashes when a communication module
is inserted in plug-in module position P
LED 2 CL3_LED0_N Green Flashes when a communication module
is inserted in plug-in module position N
Table 6-6 Connection
Pin Signal Signal Description
Siemens-specific assignment Connection using a special cable.
Is part of the device delivery.
Insulation class SELV (according to IEC 60255-27)
Plug-In Modules
You can find the Technical Data for plug-in modules in chapter 4 Plug-In Modules.
Technical Data
6.6 Communication Interfaces
234 SIPROTEC 5, Hardware Description, Manual
C53000-G5040-C002-J, Edition 08.2020
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