User's Manual

Product Manual - RFID Reader UF70 Certum 67
Chapter 7
Operation
UMZ – Write data
range of all EPC-
transponders
(defined EPC code)
masked
The UMZ 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: The EPC transponder masks 2 data words of the EPC code, rewrite
>> M01
<< m000000101060102030405060708090A0B0C
 EPC: 0C0B0A090807060504030201
>> UMZ01060102030405060708090A0B0C000000000102000000029999888
80F0F0F0F
<< umz000000101060102030405060708090A0B0C00
>> M01
<< m00000010106010203040506070808080909
 EPC: 090908080807060504030201
Host reader
CMD
Reade
r ID
Head
ID
EPC
Access
word
Memory
bank
Memory
address
Number
of data
words
Data
words
Mask
UMZ 1 byte 1 byte (2n+1)*
2 bytes
8 bytes 2 bytes 8 bytes 2 bytes N*4
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
Transpon-
der error
code
umz 1 byte 2 bytes 2 bytes 2 bytes 0-12 bytes (2n+1)*2
bytes
2 bytes