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UHF-Reader
Manual
ID ISC.ANT.U500/270 - DM
FEIG ELECTRONIC GmbH
Page 18 of 117
H71011-0e-ID-B.docx
Protocol frame: Advanced Protocol-Length
Reader
Host
1
2
3
4
5
(6...n-2)
STX
(0x02)
MSB
ALENGTH
LSB
ALENGTH
COM-ADR
CONTROL-
BYTE
(DATA)
n-1
n
LSB
CRC16
MSB
CRC16
Host
Reader
1
2
3
4
5
6
(7...n-2)
STX
(0x02)
MSB
ALENGTH
LSB
ALENGTH
COM-ADR
CONTROL-
BYTE
STATUS
1
(DATA)
n-1
n
LSB
CRC16
MSB
CRC16
NOTE:
The Reader supports the advanced protocol frame only.
STX:
The STX sign (0x02) defines that the protocol can be more than 255 Byte. The
protocol length is defined by the 2 Byte Parameter ALENGTH.
ALENGTH (n = 8...65535):
Number of protocol bytes including STX, ALENGTH and CRC16
COM-ADR:
The device bus address has to be 0 or 255
1