Special Topics
Performing cool on-column injection onto 250-µm and 320-µm columns
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Example program with a bar code reader and tray
This program illustrates the following:
• Using bar code reader commands to read a bottle label
• Examining the bar code reader message for a specific character and
agitating the sample if it is found
• Making the sample injection
The program simulates a sequence by repeating these actions for a range of
tray positions. It uses the INET_IO command from 3393A or 3396 BASIC to
transmit commands and receive responses. The same thing could be done with
a short subroutine that directly controls a port.
Note the use of a dummy sequence (line 330). This sequence is set up for one
injection of one sample; the program uses it repeatedly as it steps through the
range of bottle numbers. The sequence is stored on a disk and loaded when
required. See the integrator and BASIC manuals for more detail.
10 PRINT "USING THE BAR CODE READER IN AN ANALYTICAL SYSTEM"
20 PRINT
30 PRINT "THE LABEL FORMAT IS 14 CHARACTERS MAXIMUM."
40 PRINT
50 PRINT "IF A + SYMBOL APPEARS ANYWHERE ON THE LABEL, THE"
60 PRINT "SAMPLE WILL BE AGITATED BEFORE INJECTION."
70 PRINT
80 PRINT "IF THE SYSTEM CANN’T READ THE LABEL OR THE VIAL IS NOT"
90 PRINT "LABELED, IT WILL BE RETURNED TO ITS ORIGINAL POSITION."
100 PRINT
110 PRINT "THE USER MUST SUPPLY THE SAMPLER ADDRESS AND THE"
120 PRINT "NUMBERS OF THE FIRST AND LAST BOTTLES TO BE INJECTED."
130 PRINT
140 REM ******************************* DIMENSION STRING VARIABLES
150 DIM RESP$(40) ! RESPONSE STRINGS THAT MATTER
160 DIM JUNK$(40) ! RESPONSE STRINGS THAT DON’T MATTER
170 DIM BARCODE$(20) ! THE BAR CODE DATA, ENCLOSED IN QUOTES
180 REM
190 REM *********************** ENTER THE SAMPLER INET ADDRESS
200 PRINT
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