IMR® 2800
14
IMR Environmental Equipment, Inc.
2.4.7 RS232 interface
The RS232 serial interface can be used to transfer data from the analyzer to a PC.
Real time data or stored data can be transferred (ASCII signs are getting transferred).
The serial connection to a PC must be a 'Null-modem connection'.
The
IMR 2800
has a 9-pos. female D-Sub connector on the front panel.
RS232 female connector 9-pos.
1-
2-
3-
TXD transmit data
4-
5-
GND ground
6-
7-
8-
CTS
clear to send
9-
5 1
9
6
Connection to a PC (null-modem connection):
IMR 2800
PC 9-pos
PC 25-pos
3 TXD
2 RXD
3 RXD
5 GND
5 GND
7 GND
8 CTS
7 RTS
4 RTS
Serial data format
A character has 8 data bits; no parity and 2 stop bits.
ASCII "Computer" format:
Start (
)
Station
Fuel
Units (ppm, etc.)
NOx (according TA-Luft)(1)
Date
Time
No. of samples
Time of samples
Room Temperature
O2
CO
HC
SO2
NO2
NO
Draft
Gas Temperature
CO2
Losses
Excess Air
Stop (
)
