Programming With Bar Codes; Conventions - PSC LM520 Integration & Programming Manual

Section 3

Programming with Bar Codes

The LM520 scanner can also be programmed by scanning bar codes which contain com-
mands. This method allows users to easily adjust scanner parameters.
Bar codes used for programming must be Code 128, with a Function Code 3 (FNC3) as the
first character. The command following the FNC3 character configures the scanner in
exactly the same way as if it had received the command over the serial line, except that the
scanner will not acknowledge the command on the serial line. Each bar code may contain
only one command. All parameters for the command must be included in the label with the
command characters. For example, the label to limit the minimum number of Code 39 to 5
characters would be.
The scanner can be programmed not to accept programming bar codes by using the Disable
Programming Bar Codes command (@Y). If you disable the programming with bar codes
feature, the scanner will still accept programming commands through the serial port. The
Enable Programming (@Z) bar code commands will always be accepted by the scanner, and
cannot be disabled.
If Disable Programming Bar Codes (@Y) is set, all programming bar codes except Enable
Programming Bar Codes (@Z) will be treated as standard Code 128 bar codes.

Conventions

The remainder of this manual presents the valid commands in a tabular format. These tables
contain two or three columns.
• First column
the scanner accepts as programming commands through the serial port or in a
programming label. See Appendix D, LM520 Programming Labels, for instructions
on how to create bar code programming labels.
• Second column
column, a parameter setting is required to complete the command.
• Last column
parameters.
• Default Entries – The factory default settings for the scanner are shaded and
denoted by asterisk.
A concise list of these defaults is presented in Appendix C, Factory Default Configuration.
R44-2016
³ O
<FNC3>OH05
Bar Code Command, contains the two-letter ASCII string which
–
Bar Code Parameters, may be present. If an entry appears in this
–
Setting, describes the effect of the command and its associated
–
H 0 5
LM520 Scanner Configuration
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