User's Manual

29.05.2007 Page 42 of 59
ASR500 Reader Operation
5.7.19 Start_AutoTuning
Starts the auto tuning process (see chapter 2.2.4)
The auto tuning will take about 10.5 seconds. After it is done, the ASR500 sends the Telegram
for receipt.
Request:
STX DST SRC CMD CRC 8 ETX
0x02 0xFF 0xF0 0x87 0x69 0x03
Answer:
STX DST SRC ACK CMD DLE CRC 8 ETX
0x02 0xF0 0x01 0x06 0x87 0x10 0xDD 0x03
5.8 Description of the acknowledgements
5.8.1 ACK
Correctly received data and executed commands are acknowledged with an ACK.
Answer:
STX DST SRC ACK CMD DATn … DAT0 DLE CRC 8 ETX
0x02 0xF0 0x01 0x06 0x87 xx xx xx 0x10 xx 0x03
DATn…DAT0: Possible further data.
5.8.2 NAK
If the frame is valid, unrecognised commands or commands which cannot be executed because
of wrong data, will be acknowledged with NAK.
Answer:
STX DST SRC ACK CMD DLE CRC 8 ETX
0x02 0xF0 0x01 0x15 xx 0x10 xx 0x03