TAGnology_TAGid -125kHz_Protocol.pdf - RFID Webshop
TAGnology_TAGid -125kHz_Protocol.pdf - RFID Webshop
TAGnology_TAGid -125kHz_Protocol.pdf - RFID Webshop
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February 1999 Rev. 1.2 Personalization<br />
Control_LT (only HITAG 2):<br />
Control_LT (located in EEPROM of the read/write device) controls write accesses to the<br />
following data:<br />
ATTENTION:<br />
You cannot change bits that have once been set to 0 !<br />
BIT NUMBER BIT NAME BIT-VALUE = 1 BIT-VALUE = 0<br />
7 Key RW/WO read allowed read prohibited<br />
6 Key WO/0 write allowed read/write prohibited<br />
5 Passw. TAG RW/ read allowed read prohibited<br />
WO<br />
4 Passw. TAG WO/0 write allowed read/write prohibited<br />
3 Passw. RWD<br />
read allowed read prohibited<br />
RW/WO<br />
2 Passw. RWD WO/0 write allowed read/write prohibited<br />
1 Check PW TAG *) Off On<br />
0 Config Lock read/write of<br />
Control_LT allowed<br />
only read of<br />
Control_LT allowed<br />
*) Note for Bit 1 of Control_LT:<br />
If the HITAG 2 transponder is in Password or Crypto Mode and a GetSnr_LT command is<br />
processed, the incoming Password TAG of the transponder is checked whether it matches<br />
with the Password TAG of the reader. If it doesn’t, the read/write device transmits the errormessage<br />
INCORRECT PASSWORD TAG to the host.<br />
We recommend to activate „Check PW TAG“ (set bit 1 to zero) in order to increase the<br />
security for GetSnr_LT and PollTags commands.<br />
Page 99 (107)<br />
Protokoll HTRM801 V1.2/C