CDX800 DESCRIPTION
2.6.1.
PORT1 and PORT2 connectors - RS232
The RJ45 panel socket (RS232 – DCE – Data Communication Equipment).
Pin
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)
11
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
