Checking Connections
Checking Data Connections of Serial 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 3-20 9-pin D-subminiature female connectors
[ethernet-anschlussbuchsen-101103-kn, 1, en_GB]
Figure 3-21 Ethernet connector
Operator Interface
When the recommended communication cable is used (for order designation see Appendix A Ordering Infor-
mation and Accessories) correct connection between the SIPROTEC 4 device and the PC or Laptop is automati-
cally ensured
Service Interface
Check the data connection if the service interface is used to communicate with the device via hard wiring or
modem.
System Interface
For versions equipped with a serial interface to a control center, the user must check the data connection. The
visual check of the assignment of the transmission and reception channels is of particular importance. With
RS232 and fiber 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 Transmit
•
RxD = Data Receive
•
RTS = Request to send
3.2
3.2.1
Mounting and Commissioning
3.2 Checking Connections
SIPROTEC 4, 7VK61, Manual 203
C53000-G1176-C159-5, Edition 05.2018
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