Connections To Iec 60870-5-103 Redundant; Assignment Of The Port A And B Sockets; Usb-Digsi-Interface - Siemens SIPROTEC 7SJ81 Manual

Connections to IEC 60870-5-103 Redundant

8-pin RJ45 socket connectors are provided for electrical communication
interface T103 redundant.
RJ45 socket
Figure 13 Interface T103 redundant

Assignment of the port A and B sockets

Pin-No. RS232 RS 485
1 Shield (electrically connected with shield shroud)
2 RxD –
3 TxD A/A' (RxD/TxD-N) B/B' (RxD/TxD-P)
4 – –
5 GND C/C' (GND)
6 – –
1)
7 RTS –
8 CTS B/B' (RxD/TxD-P) A/A' (RxD/TxD-N)
9 – –
1)
Pin 7 also carries the RTS signal with RS 232 level when operated as
RS 485 interface. Pin 7 must therefore not be connected!

USB-DIGSI-Interface

The USB interface can be used to establish a connection between the
protection device and your PC. For the communication, the Microsoft
Windows USB driver is used which is installed together with DIGSI (as of
version V4.82). The interface is installed as a virtual serial COM port. We
recommend the use of standard USB cables with a maximum length of
5 m/16 ft.
SIPROTEC 7SJ81/7SK81 V4.70, Product Information
E50417-K1150-C462-A2, Edition 02.2012
2
1
2
1
Profibus DP, Modbus RS 485
RS 485
DNP3.0 RS 485
–
CNTR-A (TTL) RTS (TTL Pegel)
C/C' (GND)
+5 V (max load
<100 mA)
–
–
Ethernet IEC 60870-5-103
Port A and B
Tx+ B/B' (RxD/TxD-P)
– Tx– A/A' (RxD/TxD-N)
A Rx+
–
GND1 –
VCC1 Rx–
– –
B –
– not available
redundant
–
–
–
–
–
–
not available
31