7SR105 Rho Settings and Instruments
©2018 Siemens Protection Devices Limited Chapter 2 Page 13 of 16
Section 2: Setting & Configuring the Relay Using Reydisp
Evolution
To set the relay using a communication port the user will need the following:-
PC with Reydisp Evolution Version 7.1.5.6 or later Installed. (This can be downloaded from our website and
found under the submenu ‘Software’) This software requires windows 2000-service pack 4 or above, or windows
XP with service pack 2 or above and Microsoft.NET framework for tools.
2.1 Physical Connection
The relay can be connected to Reydisp via any of the communication ports on the relay. Suitable communication
Interface cable and converters are required depending which port is being used.
2.1.1 Front USB connection
To connect your pc locally via the front USB port.
USB Data Cable
USB Type A
USB Type B
USB Type B
socket on Relay
USB Type A
Socket on PC
Local
Engineer
Access
Figure 2.1-1 USB connection to PC
2.1.2 Rear RS485 connection
Laptop computer
RS232 to RS485
Converter
RS232 straight
through cable or
USB to RS232
Converter cable
USB or 9 pin male
D connector
25 pin male D
connector
A
G
B
RS485 screened
cable
Rear terminals
GND
Figure 2.1-2 RS485 Connection to PC
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