Black Box PC118C-R2 manual Chkd

HPIIISi TWINAX CARD

<hr>:

Identifies whether human-readables are printed or not. Human-readable characters are printed underneath the bar code. Valid values are:

0 = Do not print human-readables.

1 = Print human-readables.

<chkd>:

Indicates whether the Card automatically calculates a check digit and causes it to be printed.

Some bar codes (Code 128, POSTNET, UPC A, EAN 8, and EAN 13) require a check digit, so the Card automatically generates one and adds it to the bar-code data. If any of these bar codes has been selected, the <chkd> selection is ignored by the Card. However, one of the following values must be entered to ensure that the bar-code command string is complete and valid. The options for the <chkd> parameter are:

0 = Do not calculate/add a check digit.

1 = Calculate a check digit and add it to the bar-code data.

<ast>:

Specifies whether start/stop characters are automatically generated or manually added. This parameter only applies to bar-code type Code 3 of 9. For all other bar-code types, the start/stop characters are automatically generated by the Card and input for the <ast> parameter is ignored. However, one of the following values must be entered to ensure that the bar-code command string is complete and valid. The options for the <ast> parameter are:

0 = Do not automatically add start/stop characters.

1 = Automatically add start/stop characters.

NOTE

If value 0 is selected, you must manually enter start/stop characters (asterisks) together with the data. Failure to add the asterisks will cause an invalid bar code to be printed (that is, a bar code without start/stop char-acters). If human-readables are being printed, the asterisks will also print as human-readables.

If value 1 is selected, you must not add asterisks as start/stop characters to the data. Failure to omit asterisks will cause an invalid bar code to be printed (that is, a bar code with too many start/stop characters).

<data>:

The data to be printed as a bar code. Some bar codes require a certain number of characters. Others only allow alphanumeric or numeric characters. Before the Card processes the data string, it will check the complete data string and verify that it is valid. This is why the “¬B” at the end is so important. If an invalid data string has been entered, the Card

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