Metrologic Instruments MS2421, MS2422 RS232 Demonstration Program, On Error Goto, Close System

TROUBLESHOOTING

	Symptom	Possible Cause(s)	Solution
	RS232 Only
	The host is receiving	The scanner and host may not be	Check that the scanner and the host are configured for the
	data but the data
		configured for the same interface.	same interface.
	does not look correct.
	Characters are being	The intercharacter delay needs to be	Add some intercharacter delay to the transmitted output by
			using the MetroSelect Configuration Guide (MLPN 00-
	dropped.	added to the transmitted output.
			02407x).
	Aux Port Operation With Any Interface
	The secondary		Refer to the user’s guide provided with the secondary
	scanner is not
			scanner.
	functioning.
		The secondary scanner cable may	Ensure that the secondary scanner is connected to the
		not be connected to the proper port
			MS242x com port marked “Aux” port.
	The secondary	on the scanner.
	scanner powers up
			* The scanner must be configured to enable the auxiliary
	but data is not
			port.
	relayed to the host.	The auxiliary com port may not be
		operating properly.	The auxiliary input port’s data format must match the main
			output format of the secondary scanner.
	* Refer to the MS2xxx Stratos Series Configuration Addendum (MLPN 00-02034x) under Scanner Configuration Bar
	Codes: Auxiliary Port, Quick Start for a Secondary Metrologic Scanner.
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

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

35PRINT “SCAN A FEW BAR CODES”

40LINE INPUT #1, BARCODE$

50PRINT BARCODE$

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

70GOTO 40

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

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

32766 CLOSE: SYSTEM

32767 END

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