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 />
3.7.44 RWD_Set_BCD_Offset<br />
This Long Range Reader command writes a new BCD (BitClockDelay) -Offset value into the<br />
EEPROM of the read/write device. This value adjusts the difference of the timing between<br />
HITAG 1 and HITAG 2 transponders.<br />
ATTENTION: It is not necessary to use this command when working with Philips Long Range<br />
Readers because EEPROM is already initialized to following standard value:<br />
bcd_offset = 5<br />
C-Function: void RWD_Set_BCD_Offset (BYTE_T bcd_offset);<br />
Header-File: HitagRWD.H<br />
Serial protocol:<br />
HOST - READ/WRITE DEVICE<br />
0x03 0xA4 bcd_offset BCC<br />
READ/WRITE DEVICE - HOST<br />
0x02 Status BCC<br />
Status:<br />
0 ... no error<br />
-1 ... SERIAL ERROR<br />
3.7.45 RWD_Read_LR_Status<br />
This Long Range Reader command reads the antenna overload bit. In case of broken or badly<br />
detuned antenna the overload bit is high.<br />
C-Function: void RWD_Read_LR_Status (void);<br />
Header-File: HitagRWD.H<br />
Serial protocol:<br />
HOST - READ/WRITE DEVICE<br />
0x02 'r' 0x70<br />
READ/WRITE DEVICE - HOST<br />
0x02 Status BCC<br />
Status:<br />
0 ... no error<br />
-1 ... SERIAL ERROR<br />
-20 ... ANTENNA OVERLOAD<br />
Protokoll HTRM801 V1.2/C Page 60 (107)
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