Siemens SIPROTEC 4 7UT6 Series Manual page 340

Mounting and Commissioning
3.1 Mounting and Connections
Table 3-24
Interface
System Interface
Additional Interface
The ordering number of the replacement modules are listed in the Appendix
Accessories.
RS232 Interface
The RS232 interface can be transformed into a RS485 interface and vice versa, according to
Figure 3-15 shows the PCB C-CPU-2 with the layout of the boards.
Figure 3-16 shows how jumpers of interface RS232 are located on the interface module.
[steckbruecken-rs232-020313-kn, 1, en_GB]
Figure 3-16
Terminating resistors are not required. They are disconnected.
Please observe that in surface-mounted devices with fibre optics connection the CPU module is equipped with
an RS232 interface module. In this application, the jumpers X12 and X13 on the RS232 module are set to posi-
tion 2-3, unlike the arrangement shown in
Jumper X11 is used to activate the flow control which is important for the modem communication.
Table 3-25
Jumper /CTS from Interface RS232
X11 1-2
340
Exchange Interface Modules
Mounting location/Port
Location of the jumpers for configuration of RS232
Jumper setting for CTS (Clear To Send; flow control) on the interface module
Exchange module
RS232
RS485
LWL 820 nm
PROFIBUS FMS RS485
PROFIBUS FMS double ring
PROFIBUS FMS Einfachring
PROFIBUS DP RS485
B
PROFIBUS DP double ring
Modbus RS485
Modbus 820 nm
DNP 3.0 RS485
DNP 3.0 820 nm
Ethernet double electrical
Ethernet optical
LWL 820 nm
D
RS485
Figure 3-16.
/CTS controlled by /RTS
2-3 1)
A Ordering Information and
Figure 3-17.
SIPROTEC 4, 7UT6x, Manual
C53000-G1176-C230-5, Edition 09.2016