Allen-Bradley 2755-DD1A, Product Data, Page: 19 / 40

Bulletin 2755
Single/Dual-Head Enhanced Bar Code Decoders
Product Data
19
Examples of Host Message Replacement Rules
Example 1: Sorting the Host Message Contents by the Source of Data
Parameter Rule #1 Value Rule #2 Value
Source A B
Symbology Any Any
Symbol Number All All
Find String Containing .* .*
Replace Entire String With & &
Minimum Field Length 0 0
Alignment Right Right
Fill Character None None
Host Message Field
Number
1 2
In the decode mode Coordinated 1 or 2, two symbols per package and each
scanner reading a single symbol, the data from Scanner A will always appear
first, and the data from Scanner B second. Appropriate No-Read messages
may be selected for each scanner by using the No-Read Replacement Rules.
Example 2: Identifying the Source of Data
Parameter Rule #1 Value Rule #2 Value
Source A|B Aux
Symbology Any Any
Symbol Number All All
Find String Containing .* .*
Replace Entire String With & & Aux Data
Minimum Field Length 0 0
Alignment Right Right
Fill Character None None
Host Message Field
Number
1 1
All scanner data will be sent to the host as received. Data entered into the
AUX Port will be sent with the characters “Aux Data” appended to the data.
In a real application, it may be critical to know the source of information.
The Host Replacement Rules make this possible. (Also possible using
optional Source Identifiers.)