Allen-Bradley 2-D Manual do Utilizador descarregar pdf (Página 108)

E–10 Advanced Data Formatting

Publication 2755-6.4

Alternate Rule Sets

ADF rules may be grouped into one of four alternate sets which can

be turned on and off as needed. This is useful when you want to

format the same message in different ways. For example, a Code

128 bar code contains the following information:

Class (2 digits), Stock Number (8 digits), Price (5 digits)

This bar code might look like this:

Class = 24

Stock Number = 56712437

Price = 01500

Ordinarily you would send the data as follows:

24 (class key)

56712437 (stock key)

01500 (enter key)

But, when there is a sale, you may want to send only the following:

24 (class key)

56712437 (stock key)

and the cashier will key the price manually.

To implement this, you would first enter and ADF rule that applies to

the normal situation. This 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

– send the data that remains

– send the ENTER key

1 2 ... 103 104 105 106 107 108 109 110 111 112 113 ... 133 134

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Allen-Bradley 2-D Manual do Utilizador Página 108