Metrologic Stratos MS2x20 Series Guide de l'utilisateur télécharger pdf (Page 64)

TROUBLESHOOTING

RS232 DEMONSTRATION PROGRAM

If an RS232 scanner is not communicating with your IBM compatible PC, key in the following BASIC program to test that the

communication port and scanner are working. This program is for demonstration purposes only. It is only intended to prove

that cabling is correct, the com port is working, and the scanner is working. If the bar code data displays on the screen while

using this program, it only demonstrates that the hardware interface and scanner are working. At this point, investigate

whether the application software and the scanner configuration match. If the application does not support RS232 scanners,

a software wedge program that will take RS232 data and place it into a keyboard buffer may be needed. This program tells

the PC to ignore RTS-CTS, Data Set Ready (DSR) and Data Carrier Detect (DCD) signals. If the demonstration program

works and yours still does not, jumper RTS to CTS and Data Terminal Reading (DTR) to DCD and DSR on the back of your

PC.

10 CLS

20 ON ERROR GOTO 100

30 OPEN “COM1:9600,S,7,1,CS0,DS0,CD0,LF” AS #1

35 PRINT “SCAN A FEW BAR CODES”

40 LINE INPUT #1, BARCODE$

50 PRINT BARCODE$

60 K$ = INKEY$: IF K$ = CHR$(27) THEN GOTO 32766

70 GOTO 40

100 PRINT “ERROR NO.”; ERR; “ PRESS ANY KEY TO TERMINATE.”

110 K$ = INKEY$: IF K$ = “” THEN GOTO 110

32766 CLOSE: SYSTEM

32767 END

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Metrologic Stratos MS2x20 Series Guide de l'utilisateur Page 64