Rockwell Automation 2755 Enhanced Decoder Series B - Manual (Page 118)

8–5 Configuration: Extended Match Table and Counters
Publication 2755-833
Source
Field Type Options
Select
A (Default for DS)
B
A|B = A or B (Default for DD)
A–B = Precedent determined
Specifies from which scanner(s) an event can originate and meet the
extended match pattern requirements. For single head decoders,
Scanner A is the default value. For dual head decoders, the default
value is A|B, which means that the decoder will accept input from
either A or B to create a match. Other options include Scanner B, or
precedent determined (A–B).
When set to A–B, the decoder will use the first input from either
Scanner A or Scanner B to establish a precedent for all following
inputs. If, for example, the first input comes via Scanner B, then only
data from Scanner B will be matched from that point on.
Symbology
Field Type Options
Select
Code 39
Interleaved 2-of-5
Codabar
UPC-A
UPC-E
EAN-8
EAN-13
Code 128
Pharma–Code①
Any
① Applies only to decoders equipped with the optional
Pharma–Code capabilities.
Selects the symbology of the match code string. You can select any
one of the symbologies for each extended match code string.
Note: Any is the default value in the Symbology field for all entries
in the match code tables.