Symbol MiniScan MS-120X, Integration Manual

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13-6
MS-120X and MS-220X Integration Guide
The switching back to normal rules can also be done in the “sale” rule. For example:
When scanning a bar code of length 15, send the next 2 characters, send the
class key, send the next 8 characters, send the stock key, turn off rule set 1.
It is recommended that you scan the Disable All Rule Sets bar code on page 13-11 after
programming a rule belonging to an alternate rule set.
In addition to enabling and disabling rule sets within the rules, you can enable or disable
them by scanning the appropriate bar codes on
13-11 .
Rules Hierarchy (in Bar Codes)
The order of programming individual rules is important. Program the most general rule last.
All programmed rules are stored in a buffer. As they are programmed, they are stored at
the “top” of a rules list. If three rules are created, the list is configured as follows:
Third Rule
Second Rule
First Rule
When data is scanned, the rules list is checked from top to bottom to determine if the criteria
matches (and therefore, if the actions occur). Input is modified into the data format specified
by the first matching set of criteria it finds. Program the most general rule last.
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.
and a Code 128 bar code of length 12 is scanned, the THIRD rule takes effect and the
SECOND rule appears to not function.
Note that ADF rules are also created when using the standard data editing functions. Scan
options and prefix/suffix programming in the parameter
Scan Data Transmission Format
are entered as ADF rules. The hierarchy mentioned above also applies to them. These
rules reside in the same “rule list” as ADF Rules, so the order of their creation is also
important.