Ubisys 7047, Справочное руководство

Страница: 31 / 54

31 www.ubisys.de

7.5.5. ISO15693 Transparent mode
7.5.5.1. Enter Transparent Mode
This command enters the ISO15693 transparent mode, which allows exchanging arbitrary commands
between the tag and the reader. Two modes of operation are available. In the first mode, the reader
does not ‘ping’ the tag periodically and as such, is not able to detect if the tag is removed from the
reader’s field. This mode can be used if tags are set into a state where they do not answer (addressed)
inventory requests anymore or if a custom inventory sequence should be used.
In the second mode, the tag is pinged periodically by sending an addressed inventory request, which
must be answered as long as the tag is in the field and able to communicate. By this means, the
removal of the tag from the reader’s field can be detected.
Please note that the memory card access commands (section 7.5.3) are not available when using the
transparent mode. The extended ISO15693 information commands (section 7.5.4) might deliver
outdated information if the periodic ping was disabled and the tag was substituted or removed.
Request
Command CLA INS P1
P2
Ping mode
Le
Enter transparent mode. Do not ping tag while
in transparent mode.
FFh 27h 01h 00h ignored
Enter transparent mode. Ping tag periodically. FFh 27h 01h 01h ignored
Response
SW1 SW2
Response codes
SW1 SW1 Meaning
90h 00h Command executed successfully. Transparent mode activated.
6Ah 81h
Function not supported. Either, transparent mode is already activated or a non-ISO15693 tag is in the
field.
7.5.5.2. Leave Transparent Mode
Disables the transparent mode and returns to normal operation.
Request
CLA INS P1 P2 Le
FFh 27h 02h 00h ignored