Checking Connections; Checking Data Connections Of Serial Interfaces - Siemens siprotec SJ62 User Manual

3 Mounting and Commissioning
3.2

Checking Connections

3.2.1

Checking Data Connections of Serial Interfaces

Pin Assignments
Operator Interface
Service Interface
System Interface
415
The following tables illustrate the pin assignments of the various serial device interfac-
es and of the time synchronization interface. The position of the connections can be
seen in the following figure.
Figure 3-32 9-pin D-subminiature female connectors
Figure 3-33 Ethernet connection
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.
Check the data connection if the service (port C) is used to communicate with the
device via fix 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 the Appendix A.3.
When a serial interface of the device is connected to a central substation control
system, the data connection must be checked. A visual check of the transmit channel
and the receive channel is important. With RS232 and fiber optic interfaces, each con-
nection 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.
SIPROTEC 4, 7SJ62/63/64 Handbuch
C53000-G1140-C147-A, Edition 07.2015