Rockwell Automation 2755 Enhanced Decoder Series B User Manual

Page 152

10–17

Configuration: Host Message Replacement Rules

Publication 2755-833

Example 5: Sorting Symbols by Data Identifiers

Parameter

Rule #1
Value

Rule #2
Value

Rule #3
Value

Rule #4
Value

Source A|B

A|B

Symbology Any

Any

Symbol Number All

All

Find String

Containing

^P( . . . . . . .
)$

^Q( . * )

^S( . * )

^V( . . . . . )$

Replace Entire

String With

Qty = \1

Minimum Field

Length

Alignment Right

Right

Fill Character None

None

Host Message

Field Number

This example illustrates the effects of sorting host data using data
identifiers. Specifications such as AIAG and ODETTE use these
unique characters to identify specific data within a group of symbols.
These characters are embedded into the encoded Bar Code symbol.
Although not always printed in the human readable text, they appear
as the first character (or group of characters) in the symbol. In this
example data are sorted so that the part number, quantity, serial
number, and supplier identification are sent to the host in that
particular order. By using the parentheses in the search string and the
“\1” in the replace string, we are able to strip off the data identifier,
and send only the data desired.

In this example, if the part number does not have exactly 7
characters after the identifier, it will fail the rule and not be sent. In
rule #2, we search for the quantity identifier. If the symbol Q100 was
read, we would send “Qty = 100

” with the replace string “Qty = \1”