Dräger REGARD-1 - RS-232 Data Logger Output; RJ11 and RS 232 Pin Assignments; Data Transmission and TWA Reset

Description
Issue 5 - June 2005 Page 20 of 64 Pages
RJ11 socket RS 232 Sub D – 9 Pole
Pin Function Pin Function
1 Rx 3 Tx
2 0 V 5 GND
3 Tx 2 Rx
4 0 V 5 GND
1 NCC
6 NCC
7 RTS
8 CTS
9 NCC
Data are sent by the controller as ASCII characters
Data rate: 2400 Baud
Data bits: 8
Stop bits: 1
Parity: none
Protocol: Xon / Xoff
The gas level is and TWA are printed once every second. Example:
Gas 20.1 TWA 0.1
To reset the TWA value to zero, hold the device’s reset pushbutton pressed for 10s, or
hold the remote reset input closed for 10s, until the display shows tA-0.