7SR224 Argus Settings, Configuration & Instruments
2.1.4 Optional Rear RS232 connection
9 pin Female D
Connector
Figure 2.1.4-1 Direct RS232 Connection to PC
The optional RS232 port is a 9 pin male D connector with the following pin out.
Pin Function
1 Received Line Signal Detector
2 Received Data
3 Transmit Data
4 Data Terminal Ready
5 Signal Ground
6 Data set ready
7 Request to Send
8 Clear to Send
2.1.5 Configuring Relay Data Communication
Using the keys on the relay fascia scroll down the settings menu’s into the ‘communications’ menu and change
the settings for the communication port used on the relay. All of the below settings may not be available in all
relay types. Reydisp software uses IEC60870-5-103 protocol to communicate.
COM1-RS485 Port
COM2-USB Port
COM3 – Optional Fibre Optic, RS485 or RS232
COM4 – Optional Fibre Optic
©2010 Siemens Protection Devices Limited Chapter 2 Page 11 of 13
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