User's Manual

Product Manual - RFID Reader UF70 Certum 85
Chapter 7
Operation
UAB – Erase Block The UAB command starts the asynchronous erase block (polling) of a defined data
range of EPC transponders at the respective antenna port. The polling erase block
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: Delete 2 data words of the USER memory area (memory bank 03,
address 00000000, length 02)
>> UAB0100000000030000000002
<< uab000
Polling successfully initiated
<< uab0FF0101060B0C090A070805060304112200
IMPORTANT
Erasing a block is only supported by a few transponders at this time!
Host reader
CMD
Reader
ID
Head
ID
EPC
Access
word
Memory
bank
Memory
address
Number of N
data words
UAB 1 byte 1 byte (2n+1)*2 bytes 8 bytes 2 bytes 8 bytes 2 bytes
Reader  host (confirmation)
CMD Reader ID Result
uab 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
Transponder
error code
uab 1 byte 2 bytes 2 bytes 0-12 bytes (2n+1)*2 bytes 2 bytes