User`s guide

EXPANSION PORT MOUNTING

2.10.3. Connection of the Port1 Connector – RS232

Panel socket RJ45 (RS232 – DCE – Data Communication Equipment).

number

Signal

mark

Description Data flow direction

1 RTS Request To Send Input

2 CTS Clear To Send Output

3 DTR Data Terminal Ready Input

4 DSR Data Set Ready – connected to +4 V through

330 Ohm

Output

5 GND GROUND – signal ground

6 RXD Receive Data Output

7 CD Carrier Detect Output

8 TXD Transmit Data Input

Circuit example:

The router connection to the PC:

•

cable KD2 is connected to serial port PC (example COM1)

The router connection to equipment with full-value RS232 interface:

Router

ETH

PORT1

PWR

Cable KD-2

Router

ETH

PORT1

PWR

Cable KD-2

Pin 1 – RTS

Pin 2 – CTS

Pin 3 – DTR

Pin 4 – DSR

Pin 5 – GND

Pin 6 – RXD

Pin 7 – CD

Pin 8 – TXD

Router

Meter

GND

RXD

TXD