Siemens SIPROTEC 4 User Manual page 390

Mounting and Commissioning
3.1 Mounting and Connections
CTS (Clear to Send)
Table 3-16
Jumper
X111
1) Presetting
Jumper setting 2-3: The modem connection is usually established with star coupler of fiber optic converter.
Therefore the modem control signals according to RS232 standard DIN 66020 are not available. The modem
signals are not required since the connection to the SIPROTEC 4 devices is always operated in the half-duplex
mode. Please use the connection cable with order number 7XV5100-4.
The jumper setting 2-3 is also necessary when using the RTD-box in half duplex operation.
Jumper setting 1-2: This setting makes the modem signals available, i.e. for a direct RS232 connection
between the SIPROTEC® 4 device and the modem this setting can be selected optionally. We recommend to
use a standard RS232 modem connection cable (converter 9-pin to 25-pin).
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 matching resistors in the system, the last devices on a RS485 bus must be configured
using jumpers X103 and X104.
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.
[externe-terminierung-020313-kn, 1, en_US]
Figure 3-16
390
Jumper setting for CTS on the processor board C-CPU-2
/CTS from Interface RS232
1-2
Jumper settings of the Terminating Resistors of interface RS485 on the processor board
CCPU- 2
Terminating resistor closed
2-3
2-3
Termination of the RS485 interface (external)
/CTS triggered by /RTS
2-3 1)
Terminating resistor open
1-2
1-2
C53000-G1140-C207-8, Edition 08.2016
Presetting
1-2
1-2
SIPROTEC 4, 7SJ62/64, Manual