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TAGnology_TAGid -125kHz_Protocol.pdf - RFID Webshop

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Communication Reader-Host Rev. 1.2 February 1999<br />

3.8.2 KI_Write_SerNum<br />

Writes a 11 byte serial number into the EEPROM of the read/write device.<br />

ATTENTION: The serial number in Philips Core Module is already fixed and writeprotected<br />

at delivery.<br />

C-Function: void KI_Write_SerNum (char *snr);<br />

Header-File: HitagKeyInit. H<br />

Serial protocol:<br />

HOST - READ/WRITE DEVICE<br />

0x0D 's' Snr[0] ..... Snr[10] BCC<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 66 (107)

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