Section 6
Interfacing
6-3
Software Configuration
Functions 11-17 are used to set up RS-232C data transfer. They are accessed
directly or via the PRINT stack (FCT 10). The following example illustrates
how to configure the LI-6262 to transmit differential CO
2
(channel code 23),
absolute H
2
O (channel code 32), and analyzer temperature (channel code 42)
through the RS-232C port. Data are captured with the 1000-90 COMM
program, or any other general purpose ASCII capture program.
1.
Set the communication parameters (FCT 17) as follows:
Baud Rate: 4800
Data Bits: 8
Stop Bits: 2
Parity: None
This configuration is appropriate for an IBM PC or compatible using the
1000-90 software described in the following section. Connect the
appropriate cable.
2.
To test the cable connections and make sure that the computer software
is configured properly, press FCT 16, which will print a list of the
current calibration data for the LI-6262. If nothing is sent, make sure
that the cable connections are correct, and consult the software manual
for the software you are using.
3.
Press FCT 13 and designate 23, 32, and 42 as the channels to print.
4.
Press FCT 15 to print a header after every 20 lines of data are output.
5.
Press FCT 14 to set the print interval to 1 second.
6.
The data should look similar to this:
dC2mm/m
H2 mm/m
Temp C
50.000
10.000
21.993
50.000
10.000
21.998
.
.
.
.
.
.
.
.
.
Alternatively, to print a single header or one line of data, use functions 11
and/or 12 as needed, after setting the print interval (function 14) to zero.
