Rockwell Automation 2755 Enhanced Decoder Series B - Manual (Page 96)

7–8 Configuration: Scanner Control, Primary Match Table, Discrete I/O
Publication 2755-833
Important: If you select Any and the decoder is operating in a
triggered mode, the symbols within each label must be unique. The
decoder interprets identical symbols as duplicates and ignores the
second symbol.
Symbols/Package
Field Type Options
Select/Edit
1–16
1
Specifies the number of valid symbols that must be decoded to
produce a valid package. The default is 1. You can enter a numeric
value between 1 and 16.
If the Symbols/Package setting is satisfied, a valid read occurs. If the
Symbols/Package setting is not satisfied, a no-read occurs for that
package as well as for each symbol not read.
Match Complete
Field Type Options
Select/Edit
1–16
1
Specifies the number of times that symbols on a package must match
entries in the match code table before a Match Complete condition
occurs. You can enter a value from 1 to 16. The default is 1, which
means at least one symbol on a package must match an entry in the
match code table.
Match Complete is one of ten output conditions that can activate an
output. See the Output Condition parameter.
Note: The match complete count does not have to equal the
Symbols/Package setting. However, the match complete count must
be less than or equal to the Symbols/Package setting for a match
complete condition to occur.
Scanner B Control Parameters
These parameters control the operation of Scanner B. Each
parameter is defined below. The options for each parameter are
summarized in a table, and explained more fully in the text. The
default setting for each parameter is displayed in bold letters in the
table.