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Mounting and Commissioning
3.1 Mounting and Connections
Table 3-18
Interface
System Interface
The order numbers of the exchange modules can be found in the Appendix in Section A.1, Accessories.
RS232 Interface
Interface RS232 can be modified to interface RS485 and vice versa (see Figures 3-12 and 3-13).
Figure 3-11 shows the C-CPU-2 PCB with the layout of the modules.
The following figure shows the location of the jumpers of interface RS232 on the interface module.
Surface-mounted devices with fibre optics connection have their fibre optics module fitted in the console
housing on the case bottom. The fibre optics module is controlled via an RS232 interface module at the asso-
ciated CPU interface slot. For this application type the jumpers X12 and X13 on the RS232 module are plugged
in position 2-3.
Figure 3-12
Terminating resistors are not required for RS232. They are disconnected.
Jumper X11 is used to activate the flow control which is important for the modem communication.
Table 3-19
Jumper
X11
1)
Default Setting
Jumper setting 2-3: The connection to the modem is usually established with a star coupler or fibre-optic con-
verter. Therefore the modem control signals according to RS232 standard DIN 66020 are not available. 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.
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).
200
Exchange System Interface Modules
Mounting location / interface
Location of the jumpers for configuration of RS232
Jumper setting for CTS (Clear To Send, flow control) on the interface module
/CTS from Interface RS232
1-2
only interface modules that can be
B
ordered in our facilities via the order key
(see also Appendix, Section A.1).
/CTS controlled by /RTS
1)
2-3
C53000-G1176-C159-3, Release date 05.2009
Exchange module
SIPROTEC, 7VK61, Manual
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