Default Rules - Symbol Cyclone M2000 Series Product Reference Manual

Advanced Data Formatting (ADF)
When data is scanned, the rules list is checked from top to bottom to determine
if the criteria matches (and therefore, if the actions should occur). Input is
modified into the data format specified by the first matching set of criteria it
finds. Be sure that your most general rule is the first one programmed.
For example, if the THIRD rule states:
When scanning a bar code of any length, send all data, then send the ENTER key.
And the SECOND rule states:
When scanning a Code 128 bar code of length 12, send the first four characters,
then send the ENTER key, then send all remaining data.
If a Code 128 bar code of length 12 were scanned, the THIRD rule would be in
effect. The SECOND rule would appear to not function.
Note also that ADF rules are actually created when you use the standard data
editing functions. Scan options are entered as ADF rules, and the hierarchy
mentioned above also applies to them. For the M2000, this applies to prefix/
suffix programming in the parameter Scan Data Transmission Format.
These rules reside in the same "rule list" as ADF Rules, so the order of their
creation is also important.

Default Rules

Every unit has a default rule to send all scan data. Units with custom software
may have one or more default rules burned in. The rules hierarchy checks user
programmable rules first, then the default rules. Default rules can be disabled
by entering the following general rule in the user programmable buffer:
When receiving scan data, send all data.
Since this rule always applies, ADF will never go into the default rules.
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