GIGA-TMS TR4020, Руководство пользователя

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Prefix to match (Main Menu
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Setup
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Advanced…
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External reader)
See also: From character , From character , Fine-tuning ID-code processing , Using the TR40xx as an
Access Control Terminal .
Note: The explanation below applies to the TR40xx’s external reader. There is an identical Setting for
an internal reader- see Prefix to match (Internal reader) .
Prefix to match allows you to restrict the User ID-cards accepted by the TR40xx to cards whose
leading ID-code characters match those of the prefix string. This way you can setup the System to accept
only certain ID-cards (see
Fine-tuning ID-code processing ). You can even implement a simple access
control function ( Using the TR40xx as an Access Control Terminal ).
The prefix string can be from 0 to 16 digits long. Entering a string with 0 characters disables prefix
checking- any readable User card will be accepted. If the prefix string is set, the TR40xx will compare each
User Card with this string and reject the Cards that do not match, for example:
If Prefix to match is set to “123” then the TR40xx will accept cards such as “1234”, “123679”, “123”.
The Terminal will reject the Cards with codes like “14377” and “12”.
Default value for this setting is “” (empty string), i.e. prefix matching is disabled.