CONEL CDX 800 [11/44] Port1 and port2 connectors rs232

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CDX800 DESCRIPTION

2.6.1. PORT1 and PORT2 connectors - RS232

The RJ45 panel socket (RS232 – DCE – Data Communication Equipment).

No.

Signal

name

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

43B43B43B43B

Circuit example of the meter with modem CDX 800:

Circuit example of the PC with modem CDX 800:

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

Pin 1 – RTS

Pin 2 – CTS

Pin 3 – DTR

Pin 4 – DSR

Pin 5 – GND

Pin 6 – RXD

Pin 7 – CD

Pin 8 – TXD

Modem CDX 800

GND

RXD

TXD

Meter

PORT1

PORT2

PWR

Modem CDX 800

Cable KD-2