User's Manual

Product Manual - RFID Reader UF70 Certum 75
Chapter 7
Operation
T and UAM – Enable
read polling EPC
The T or UAM 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!! Transponder
messages only appear if EPC transponders are actually moved in the field. 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:
>> P02901 (UHFshow Going active)
<< p0
>> UAM01
<< uam000
<< uam0FF010106BBCC99AA7788556633441122
 EPC transponder enters the field: 2211443366558877AA99CCBB
<< uam0FF010106010203040506070808080909
 EPC transponder enters the field: 090808080706050403020106
Host reader
CMD Reader ID Head ID
UAM
T
1 byte 1 byte
Reader  host (confirmation)
CMD Reader ID Result
uam
t
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)
uam 1 byte 2 bytes 2 bytes 0-12 bytes (2n+1)*2 bytes 2 bytes