User's Manual

Product Manual - RFID Reader UF70 Certum 77
Chapter 7
Operation
UAA –
Enable Read
Polling Raw
The UAA command starts the polling of EPC transponders on the respective
antenna port, as long as it is not ended or the device is not reset! With each
polling run all transponders are shown - which may result in a high data traffic.
The polling is briefly stopped for intermediate read requests and is continued
after the action.
If polling is activated via parameter "polling port" 0x28, polling is restarted
automatically after reset. Only the so-called transponder messages appear when
activating polling per parameter.
1) These data are displayed when transponders are moved out of the field.
Example:
>> UAA01
<< uaa000
<< uaa0FF010106BBCC99AA7788556633441122
 EPC transponder enters the field: 2211443366558877AA99CCBB
<< uaa0FF010106010203040506070808080909
 EPC transponder enters the field: 090808080706050403020106
<< uaa000010106BBCC99AA77885566334411225502
 EPC transponder leaves the field:  EPC: 2211443366558877AA99CCBB
<< uaa0000101060102030405060708080809095C02
Host reader
CMD Reader ID Head ID
UAA 1 byte 1 byte
Reader  host (confirmation)
CMD Reader ID Result
uaa 1 byte 2 bytes
Reader  host (transponder message)
Overhead response telegram Data of the EPC transponder
CMD Reader ID Direction Ex flag Extensions EPC
Reading
cycles
1)
uaa 1 byte 2 bytes 2 bytes 0-12 bytes (2n+1)*
2 bytes
2 bytes