User's Manual

Product Manual - RFID Reader UF80 46
Chapter 7
Operation
UWZ - Write data
range of all EPC
transponders
(defined EPC code)
The UWZ command starts to overwrite the defined data range of all EPC
transponders located in the field that have a defined EPC code. 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: Overwrite several EPC transponders having the same EPC code with a
new EPC code
>> UWZ01060B0C090A07080506030401020000000001020000000601020304
05060708090A0B0C
<< uwz000000101060B0C090A070805060304010200
Control reading:
>> M01
<< m0000001
01060B0C090A0708050603040102
EPC: 02010403060508070A090C0B
>> M01
<< m0000001
01060102030405060708090A0B0C
01060102030405060708090A0B0C
01060102030405060708090A0B0C
Host reader
CMD
Reader
ID
Head
ID
EPC
Access
word
Memory
bank
Memory
address
Number N
data
words
Data
words
UWZ 1 byte 1 byte (2n+1)*2
bytes
8 bytes 2 bytes 8 bytes 2 bytes N*4 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
1)
Transponder
error code
uwz 1 byte 2 bytes 2 bytes 2 bytes 0-12 bytes (2n+1)*2
bytes
2 bytes