Wasp Bar Code WLS 8400 FZ 用户手册

10-7

The switching back to normal rules can also be done in the “sale” rule. For example, the 
rule may look like this:

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 the 

 bar code on page 10-11 be scanned after 

programming a rule belonging to an alternate rule set.

In addition to enabling and disabling rule sets within the rules, it is possible to enable or 
disable them by scanning the appropriate bar codes on 

The order of programming individual rules is important.The most general rule should be 
programmed 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 have been created, the list would be 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 should occur). Input is modified into the data format 
specified by the first matching set of criteria it finds. Be sure that the most general rule is 
the last 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 the standard data editing functions are 
used. Scan options are entered as ADF rules, and the hierarchy mentioned above also 
applies to them. For the scanner, this applies to prefix/suffix programming in the parameter 
Scan Data Transmission Format.