Siemens SIPROTEC 7SJ62 Manual page 416

Mounting and Commissioning
3.1 Mounting and Connections
Terminating Resistors
Table 3-17
Jumper
X103
X104
Note: Both jumpers must always be plugged in the same way !
Jumper X90 has currently no function. The factory setting is 1-2.
The terminating resistors can also be connected externally (e.g. to the connection module). In this case, the
terminating resistors located on the RS485 or PROFIBUS interface module or directly on the PCB of the 7SJ64
processor board C-CPU-2 must be de-energized.
Figure 3-14
416
Jumper settings of the Terminating Resistors of interface RS485 on the C-CPU-2 processor
board
Terminating resistor
closed
2-3
2-3
Termination of the RS485 interface (external)
Terminating resistor
open
1-2
1-2
SIPROTEC, 7SJ62/64, Manual
C53000-G1140-C207-2, Release date 01.2008
Presetting
1-2
1-2