User's Manual

Product Manual - RFID Reader UF80 35
Chapter 7
Operation
For future developments, the EPC code should have a flexible length n from 0 to
31 data words (2 bytes data). The underlying software version UF80V1.1 still
uses a fixed EPC length of 6 data words. An n byte is placed before the actual EPC
code and corresponds to the quantity of EPC data words. The EPC code is
transferred in such a way that the LSB byte is transmitted first. The data are
interpreted in HEX format. This means that two ASCII characters in the message
equal one byte of data in HEX format. The following applies to the number of EPC
data words n: 0<=n<=31
Example:
ASCII string "060C0B0A090807060504030201"
-> Number n of EPC data words 0x06
-> EPC 0x0102030405060708090A0B0C
The extension flag determines which information is included in the recognized
EPC transponder. The Ex flag is set by parameter 0x76. The data are interpreted
in HEX format. This means that two ASCII characters in the message equal one
byte of data in HEX format.
Values:
0x00 do not transmit extensions
0x01 only transmit antenna port
0x02 only transmit RSSI value
0x03 transmit antenna port and RSSI
0x04 transmit time stamp
0x05 transmit time stamp and antenna port
0x06 transmit time stamp and RSSI value
0x07 transmit time stamp, RSSI value and antenna port
0x08 transmit transponder protocol control word
0x09 transmit antenna port and transponder protocol control word
0x0A transmit RSSI value and protocol control word
0x0B transmit antenna port, RSSI value and protocol control word
0x0C transmit time stamp and protocol control word
0x0D transmit time stamp, antenna port and protocol control word
0x0E transmit time stamp, RSSI value and protocol control word
0x0F transmit time stamp, antenna port, RSSI value and protocol control word
EPC
(2n+1)*2
bytes
Ex flag 2 bytes