Rockwell Automation 2755 AdaptaScan Software - Manual (Page 156)

11–4
Publication 2755-838
The Reader determines when a package is read by matching the
decoded bar code symbols with symbols entered in a match table.
A valid package is decoded when all of the decoded symbols
correspond with the specified match table entries for the package.
Decoded Bar Code Data
016759089
287944498
Match Function
Match Entry
Match Table
Package Definition
016759089
287944498
= Package Read
➀
➁
➂
➃
Reader decodes two symbols
➀
on the package.
Two Match Entry
➁
functions are defined, one for each value.
Decoded bar code symbols
➀
match the match table package definition
➂
resulting
in a valid package
➃.
The Match Table
➂
defines a Package as two match entries.
An output module can be triggered whenever a match occurs or a
package is decoded. This allows you to design sorting and label
verification functions. In addition, the Reader has both match entry
and package counters for tracking the number of symbols or
packages read.
Defining a Package