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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Communication Reader-Host Rev. 1.2 February 1999<br />
3.8.10 KI_Write_Control2<br />
This command writes a new value to the control byte Control_LT into the EEPROM of the<br />
read/write device. Control_LT is related to the HITAG 2 transponder.<br />
Initial value stored in the EEPROM of a delivered read/write device:<br />
Control_LT = 0xFF<br />
ATTENTION: Once a bit in Control_LT has been set to ‘0’ it is impossible to change it<br />
back to one. We strongly recommend to read Chapter „Personalization“ carefully before<br />
using this command.<br />
C-Function: void KI_Write_Control2 (BYTE_T control_lt);<br />
Header-File: HitagKeyInit. H<br />
Serial protocol:<br />
HOST - READ/WRITE DEVICE<br />
0x03 0x91 Control_LT BCC<br />
Control_LT: see Chapter „Personalization“<br />
READ/WRITE DEVICE - HOST<br />
0x02 Status BCC<br />
Status: 0 ... no error<br />
- 1 ... SERIAL ERROR (in this case the error can also mean, that the read/write<br />
device is not in the KeyInit Mode!)<br />
-12 ... EEPROM WRITE PROTECTED<br />
If any error occurs KeyInit Mode is exited immediately.<br />
Protokoll HTRM801 V1.2/C Page 74 (107)