Metrologic Instruments MS7320 Manuel D’Utilisation

RS232

EMONSTRATION

ROGRAM

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