Checking Connections
Checking Data Connections of Interfaces
The tables in the following sections list the pin assignments for the different serial interfaces, the time
synchronization interface and the Ethernet interface of the device. The position of the connectors is depicted
in the following figures.
[dsub-buchsen-020313-kn, 1, en_GB]
Figure 3-16 9-pin D-subminiature female connectors
[ethernet-anschlussbuchsen-101103-kn, 1, en_GB]
Figure 3-17 Ethernet connector
Operator Interface
When the recommended communication cable is used, correct connection between the SIPROTEC 4 device
and the PC is automatically ensured. See the Appendix for an ordering description of the cable.
Service Interface
Check the data connection if the service interface (Port C) for communication with the device via fix wiring or
a modem.
System Interface
When a serial interface of the device is connected to a central substation control system, the data connection
must be checked. The visual check of the assignment of the transmission and reception channels is of partic-
ular importance. With RS232 and fibre optic interfaces, each connection is dedicated to one transmission
direction. Therefore the output of one device must be connected to the input of the other device and vice
versa.
With data cables, the connections are designated according to DIN 66020 and ISO 2110:
•
TxD = Data output
•
RxD = Data input
•
RTS = Request to send
3.2
3.2.1
Mounting and Commissioning
3.2 Checking Connections
SIPROTEC 4, 7VE61 and 7VE63, Manual 163
C53000-G1176-C163-3, Edition 10.2017
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