User's Manual

Product Manual - RFID Reader UF70 Certum 81
Chapter 7
Operation
UAW – Polling
Write Data
The UAW command starts the asynchronous writing (polling) of a defined data
range of EPC transponders at the respective antenna port. The polling write data
is executed as long as it is not ended or a reset is executed. 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.
1) These data are displayed in the order listed for each identified EPC
transponder.
Example: Write EPC (memory bank 01, address 02000000, length 06)
>> UAW01000000000102000000060102030405060708090A0B0C
<< uaw000
Polling successfully initiated
<< uaw0FF010106BBCC99AA778855663344112200
<< uaw000010106BBCC99AA77885566334411220500
<< uaw0FF0101060B0C090A070805060304010200
<< uaw0000101060B0C090A07080506030401023000
<< uaw0FF01010601020304050607080808090900
<< uaw0000101060102030405060708080809090500
<< uaw0FF0101060B0C090A070805060304010200
<< uaw0000101060B0C090A07080506030401020700
<< uaw0FF0101060B0C090A070805060304010200
Host reader
CMD
Reader
ID
Head
ID
Access
word
Memory
bank
Memory
address
Number of
N data
words
Data
words
UAW 1 byte 1 byte 8 bytes 2 bytes 8 bytes 2 bytes N*4 bytes
Reader  host (confirmation)
CMD Reader ID Result
uaw 1 byte 2 bytes
Reader  host (transponder message)
Overhead response telegram
Data of the participating EPC transponders
1)
CMD
Reader
ID
Direction Ex flag Extensions EPC
Reading
cycles
uaw 1 byte 2 bytes 2 bytes 0-12 bytes (2n+1)*2 bytes 2 bytes