Number of Characters
Start Setup | End Setup |
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Number of Characters Settings:
If you are going to read bar codes of a known length, it is recommended to set the scanner for a fixed number of characters. The scanner uses this to verify that labels read are of the correct length and reject labels that do not have the specified length. The advantage of setting a fixed length is that it provides protection against short scans of labels, such as Interleaved 2of 5, which do not provide sufficient security against partial scans. The length check is done on the label data and is not affected by options such as (not) transmit start/stop character or check digit. Setting the number or characters does not affect fixed length codes, such as
Character Length Settings:
Global Setting for Fixed Length
fixed length OFF for all variable length codes | default | I1 |
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fixed length ON for all enabled variable length codes |
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Individual Setting for Length
fixed length ON for selected variable length code(s) | IL |
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set minimum length for selected variable length code(s) | IM |
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set maximum length for selected variable length codes | IN |
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Fixed Length Example Programming Sequence:
1)Scan “Start Setup”
2)Scan “Fixed Length ON” (global or individual)
3)Scan a bar code of the desired length
4)Scan another bar code of a second desired length (optional)
5)Scan “End Setup”
If you scan “global” fixed length then all enabled codes will be affected. If you scan “individual” fixed length then only the symbology scanned in step 3 and/or 4 is affected.
Note: The maximum number of characters that can be set is 8000.