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LFM 4x Reader Rev1.4
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57
Customer manual
LFM 4x Reader
RFID
WE GENERATE SOLUTIONS
10.4.12 L - Lock data area
A single page of a multipage transponder can be disabled. The page can still be read, but not
rewritten. The process cannot be reversed.
Host
Device
CMD
Reader-ID
Pages
L
1 Byte
2 Bytes
Device
Host
CMD
Reader-ID
L
1 Byte
If the lock of the transponder page fails, the reader repeats the procedure several times before
an error message is sent. The number of repetitions is defined in parameter 4
(‚
r / w
maxrepeat
‘). If writing is still not possible, the reader sends the error message ‚no tag (4)‘ to the
host after the repetitions have been carried out.
If the page was already locked, a positive confirmation will be sent (same as the first block).
If the sensor check is activated (parameter 1
readmode
), the assignment of the external input is
checked before the blocking process is started by the host. The locking process is only started
when the sensor is occupied, otherwise the error message
‚no tag (4)‘ is sent.
Locking a page cannot be reversed.
This page is permanently write protected.
