Checking Connections; Checking Data Connections Of Serial Interfaces - Siemens SIPROTEC 7SJ61 Manual

3.2

Checking Connections

3.2.1

Checking Data Connections of Serial Interfaces

Pin Assignments
The following tables illustrate the pin assignments of the various serial device interfaces, of the time synchro-
nization interface and of the Ethernet interface. The position of the connections can be seen in the following
figure.
Figure 3-17
Figure 3-18
Operator Interface
When the recommended communication cable is used (refer to the Appendix for the ordering number), correct
connection between the SIPROTEC 4 device and the PC or laptop is automatically ensured.
Service Interface
Check the data connection if the service interface (Port C) is used to communicate with the device via fixed
wiring or a modem. If the service port is used as input for one or two RTD boxes, verify the interconnection
according to one of the connection examples given in Appendix A.3.
SIPROTEC, 7SJ61, Manual
C53000-G1140-C210-1, Release date 02.2008
9-pin D-subminiature female connectors
RJ45 sockets
Mounting and Commissioning
3.2 Checking Connections
285