Rockwell Automation 2755 Enhanced Decoder Series B - Manual (Page 119)

8–6 Configuration: Extended Match Table and Counters
Publication 2755-833
Match Pattern String
Field Type Options
Edit Text
0 to 32 characters
Blank
Defines the characters for a specified match code string (1 - 128).
The default is no characters (Blank), which means a match code
string is not defined.
You can enter up to 32 characters for each match code string
(including non-printable control characters). Enter the characters as
they will be transmitted to the host. Do not include check digits if
you disabled the Include Check Character parameter for the
selected symbology.
The string accepts the question mark (?) as a single character wild
card. A position containing a ? will match any single ASCII
character in the same position of the decoded data.
Note: The Extended Match Code tables interpret a question mark
differently than do the Host Replacement rules. The question mark
functions as a generic wildcard when used in the Extended Match
Code Table, and as a metacharacter in the Host Message
Replacement Rules.
The decoder compares all decoded data with the specified entries in
the match code table. If the decoded data matches any of the 128
strings, a match condition occurs.
Count
Field Type Options
Edit Numeric
0 through 999999
0
This field displays the current value of the extended match count for
each table entry. The count automatically increments when the
pattern, source, and symbology values all match a given extended
match pattern. You can edit this field to set a specific start value
when desired.