User's Manual

Product Manual - RFID Reader UF70 Certum 68
Chapter 7
Operation
UBW – Erase block
of all EPC
transponders
The UBW command starts to delete (erase) the defined blocks of all EPC
transponders located in the field. Several EPC transponders can be located in the
write area of the antenna when using this command.
1) These data are displayed in the order listed for each identified EPC
transponder.
2) The response of the transponder is optional and only appears at result "00".
3) The result and Ex flag is only available in the first transmitted message in
messages with several frames.
Example: 2 data words of the user area of an EPC transponder are deleted
>> M01
<< m000000101060B0C090A0708050603040102
>> UBW01060B0C090A070805060304010200000000030000000002
<< ubw000000101060B0C090A070805060304010200
Host reader
CMD Reader ID Head ID
Access
word
Memory
bank
Memory
address
Number of N
data words
UBW 1 byte 1 byte 8 bytes 2 bytes 8 bytes 2 bytes
Reader host
Overhead response telegram
2)
Data of the participating EPC
transponders
1)2)
CMD Reader ID Frame ID
Result
3)
Ex flag
3)
Extensions EPC
Transpon-
der error
code
ubw 1 byte 2 bytes 2 bytes 2 bytes 0-12 bytes (2n+1)*
2 bytes
2 bytes