Howtorfid – Avery Dennison RFID User Manual
Page 38
HowToRFID
Revision: 13
Date: 31 August 2009
Page 38 of 53
*2) “n” parameter required
*3) “n” parameter optional - for limiting size of data returned for read operations
#SRFt/
bfs/n/r#G
opt. b
=
L
Least significant byte of block first (default) :
Bytes of data (provided with the #VW/T command) are written on transponder
beginning with the LSB first.
=
M
Most significant byte of block first:
Bytes of (provided with the #VW/T command) are written on transponder beginning
with the MSB first.
opt. f
=
P
locking option (write protect), default: don’t’ lock
(not implemented yet)
opt. s
=
int
if data type is
BLOCK: Address of start block
MEM BANK: address / identifier of memory bank
MEMBLOCK: combination of memory bank identifier and address offset in
the memory bank
scheme for address calculation:
s =
EPC MemoryBankID:
0 - reserved (Acces + Kill password)
1 – EPC
2 – TID
3 – USER
otherwise ignored.
Default setting: 0
#SRFt/bfs/
n/r#G
opt. n
= int
Number of blocks to read, used if data type is BLOCK, TID, MEMBANK, or
MEMBLOCK; ignored otherwise. Default setting: 0
for reading the field "TID" (t=1) the size parameter can be used to limit the size of
the returned data; giving no size information will return the whole content of the TID
memory bank which may contain more information than expected (depending from
RFID transponder/chip)
typical default values:
2 => read 32-bit Vendor-ID/Chip-ID
4 => read 32-bit Vendor-ID/Chip-ID + 32-bit Unique Serial Number
#SRFt/bfs/n/
r#G
opt. r
=
int
Number of read/write retries. Default defined by parameter “Nr of CMD
retries”.