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 />
3.8.6 KI_Write_Control<br />
This command writes a new value to the control bytes Control_RW and Control_WO into the<br />
EEPROM of the read/write device.<br />
Initial values stored in the EEPROM of a delivered read/write device:<br />
Control_RW = 0x7F<br />
Control_WO = 0xFF<br />
ATTENTION: Once a bit in Control_RW or Control_WO has been set to ‘0’ it is<br />
impossible to change it back to one. We strongly recommend to read Chapter<br />
„Personalization“ carefully before using this command.<br />
C-Function: void KI_Write_Control (BYTE_T control_rw, BYTE_T control_wo);<br />
Header-File: HitagKeyInit. H<br />
Serial protocol:<br />
HOST - READ/WRITE DEVICE<br />
0x04 'c' Control_RW Control_WO BCC<br />
Control_RW: see Chapter „Personalization“<br />
Control_WO: see Chapter „Personalization“<br />
READ/WRITE DEVICE - HOST<br />
0x02 Status<br />
Status:<br />
BCC<br />
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 />
Protokoll HTRM801 V1.2/C Page 70 (107)