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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 />

3.7.3 HT1_GetSnrSelectHalt<br />

This command provides the serial number of a HITAG 1 transponder and sets the transponder into<br />

Advanced <strong>Protocol</strong> Mode (command is not available for HITAG 1 transponders based on ASIC<br />

HT1 ICS30 01x ; only available for HITAG 1 transponders based on ASIC HT1 ICS30 02x).<br />

For further information on the Advanced <strong>Protocol</strong> Mode see chapter „Transponders“.<br />

C-Function: void HT1_GetSnrSelectHalt (DWORD_T *snr, BYTE_T *more);<br />

Header-File: Hitag1.H<br />

Serial protocol:<br />

HOST - READ/WRITE DEVICE<br />

0x02 'y' 0x45<br />

READ/WRITE DEVICE - HOST<br />

7 0 ------ 31 24<br />

n+2 Status SNR-LSB ------ SNR-MSB more BCC<br />

n = 0 if an error occurred (error code in Status).<br />

n = 5 if data were read from a transponder (Status = 0).<br />

more: Proximity Reader: more is always 0.<br />

Long Range Reader: more equal to one indicates that there is at least one additional<br />

transponder in the reading area of the read/write device.<br />

Status: 0 ... no error<br />

-1 ... SERIAL ERROR<br />

-3 ... NOTAG<br />

Protokoll HTRM801 V1.2/C Page 18 (107)

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