Rockwell Automation 2755 StrataSet Programming Software - Manual (Page 39)

2–28 Configuring your Reader
Publication 2755-6.14
Length Specifiers
This section provides you the option of restricting the size of the bar
codes that the reader accepts. The following are the options
available from the Length Specifiers section. From the following
menus, you can program the reader to scan only bar codes that meet
your defined criteria.
Note: The length specifier options are available from the main
configuration screen. As a result no pop–up menus are displayed
here.
Length Specifiers Type Description
I2 of 5 Locks (14 & 0)
The number of digits in the I2 OF 5 (Interleaved 2 of
5) bar codes that you are scanning are specified in
this field. Two individual values, ranging from 1-50
can be selected via the two fields below the I2 OF 5
option. The first field can be set to zero if you wish to
have the length variable. If you are only scanning one
length of I2 OF 5 bar codes, enter that value into the
first field and enter 0 in the second field. This causes
a lock on the first value. If you are scanning I2 OF 5
bar codes, it is strongly recommended that you
specify bar code lengths when possible, to help avoid
misreads.
Others (Min 4)
The minimum number of characters in the bar codes
that are scanned can be specified in this field. If, for
example, Min is set to 4, the reader does not scan bar
codes that have less than 4 characters. To change
this option, position the cursor on the field, type in the
new number, and press
ENTER .
Others (Lock 0)
If the reader is always scanning bar codes of the
same length, the length of accepted bar codes can be
programmed into the reader with the Lock feature.
For example, if all the bar codes to be scanned are
seven–digit Code 39, a 7 can be entered in the Lock
field. If all bar codes being scanned are variable
lengths, type a zero in this field. If the Lock feature is
used, be sure that Mn is not greater than the Lock
value.