10
2.3 RS232 Output
Operations
RS232 Connections
The LISST-ABS has also been designed to support RS232
communication
in
both
transmit-only
and
two-way
communication modes.
RS232 requires four wires. Power, Ground, Transmit and
Receive. Appendix A includes detailed descriptions of the use
of the individual pins of the 8-pin connector on the LISST-ABS.
However, in most cases you will be using a cable provided by
Sequoia for connecting to your RS232 compatible datalogger.
To make the connections easier we have provided different
cable terminations designed specifically for different connection
requirements. For example we provide a termination with only
the four individual wires that are labeled and can be easily
connected to the datalogger. The mating connector makes it
easy to remove the long cable without disconnecting the wires
from the datalogger. You can also easily switch between the
datalogger and the USB cable if needed.
The wires are labeled and color coded. Connect the Black wire
to Ground. Connect the Red wire to +12V. Connect the Yellow
ABS Transmit wire to the datalogger receive input and the Blue
ABS Receive wire to the datalogger transmit output.
The LISST-ABS uses a baud rate of 9600 with 8 data bits, one
stop bit, no parity, and no flow control.
By default, the LISST-ABS will automatically start outputting the
Uncalibrated Concentration values out the RS232 connection
upon power up. The values are output at once per second.
The values are one value per line in scientific notation. The line
is terminated with a linefeed character. We call this the
Automatic Mode output.
The simplest method of collecting RS232 data is to capture and
Содержание LISST-ABS
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