Siemens SIPROTEC 4 7VK61 Manual page 188

Mounting and Commissioning
3.1 Mounting and Connections
NOTE
i
i
For a direct connection to DIGSI with interface RS232 jumper X111 must be plugged in position 2-3.
If there are no external terminating resistors in the system, the last devices on a RS485 bus must be config-
ured via jumpers X103 and X104.
Table 3-7
Jumper
X103
X104
Note: Both jumpers must always be plugged in the same way!
Jumper X90 has no function. The factory setting is 1-2.
Terminating resistors can also be connected externally (e.g. to the terminal block). In this case, the termi-
nating resistors located on the RS485 or PROFIBUS interface module or directly on the PCB of the processor
board C-CPU-2 must be de-energized.
[externe-terminierung-020313-kn, 1, en_GB]
Figure 3-6
C-I/O-4 Input/Output Board(s)
The layout of the PCB for the input/output board C-I/O-4 is shown in the following Figure.
The selected control voltages of the binary inputs BE6 to BE20 are checked according to
188
Jumper settings of the Terminating Resistors of the RS485 interface on the C-CPU-2 processor
board
Terminating Resistor
enabled
2-3
2-3
Termination of the RS485 interface (external)
Terminating Resistor
disabled
1-2
1-2
C53000-G1176-C159-5, Edition 05.2018
Presetting
1-2
1-2
Table 3-8.
SIPROTEC 4, 7VK61, Manual