Omnitron Systems Technology RS-232 user manual Data Fields

Data Fields

By separating decoded data into blocks known as “fields,” each block of data can be treated individually. Fields can also be added to the data, permitting user-required characters or function codes to be included.

The fields are identified by a one-character ID starting with the character “A” (up to and including “Z”) in the order they were created. These fields can then be sent to the host in the order you specified.

For example, if the credit card data on Track 2 of the magnetic stripe is:

;1234567890123456=9912xxxxxxx?

It is divided into seven fields (A, B, C, D, E, F, and G) as shown below:

;1234567890123456=9912xxxxxxx?

A B C D E F

If your application software needs the data sent in the following format:

9912<ENTER>

1234567890123456<ENTER>

You can create that format by selecting only the fields you need, reversing the order in which they are sent to the host, and then creating a new field <ENTER> to insert after each field.

We do this by using the fields as defined above and adding a new field:

Field B = 1234567890123456

Field D = 9912

Field G = <ENTER>

and then sending {Field D}{Field H}{Field B}{Field G} to the host.

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