Metrologic Instruments Hand-Held Scanner 5. Data Output Format

and Max/Min code length. If the fixed code length is selected, up to

2 fixed lengths can be specified. And if max / min code length is

selected, the max length and the min length must be specified, and

the scanner will only accept those codes with lengths fall between

max / min length specified.

• Convert to UK Plessey: If this parameter is enabled, the scanner

will change each occurrence of the character ‘A’ into character ‘X’ in

the code.

• Checksum Transmission: If this parameter is enabled, the

checksum characters (two characters) will be transmitted together

with data.

5. Data Output Format

Data read by the scanner will be processed in the following sequence (RS-

232 and Keyboard Wedge).

1) The character substitution is performed on the barcode data.

2) The Code ID and the Length Code are inserted at the beginning of the

data as shown below.

[Code ID] [Length Code] [Data]

3) The resulting data of step 1 will be processed by the editing formats. For

details, please refer to the section “Data Editing”.

4) And finally the Prefix Code and the Postfix Code will be added before

transmission.

[Prefix Code] [Resulting Data of Step 3] [Postfix Code]

There are three character substitution settings on the scanner. These

settings are configured on a character base, i.e, a specific character is to

be substituted by an another character. The character substitution is

performed on every occurrence of the characters specified in these

settings. Be aware, the substitution is performed only on the barcode itself

(exclude Prefix Code, Postfix Code, Code ID, Length Code or any

Additional Field) and is performed before editing mode processing.

If only the character to be replaced is specified, every occurrence of that

character in the barcode will be taken away.

Up to four characters of prefix / postfix code can be configured for the

scanner.