Rockwell Automation 56RF RFID System User Manual - Manual (Page 17)

Rockwell Automation Publication 56RF-UM001A-EN-P - October 2011 17
RFID Components Chapter 2
Tag Memory Structure
Universally Unique Identifier (UUID)
Each tag has a different 64-bit hexadecimal UUID that is programmed during
the production process according to ISO/IEC 15693-3 and cannot be changed
afterwards.
The numbering of the 64 bits is done according to ISO/IEC 15693-3 starting
with the least significant bit (LSB) 1 and ending with the most significant bit
(MSB) 64. This is in contrast to the general used bit numbering within a byte
(starting with LSB 0).
Byte 5 (bit 41…48) is the tag type. Byte 6 (bit 49…56) is the manufacturer code,
which coincides with the number of bytes/block.
The table below shows the RFID tags offered by Rockwell Automation and their
structure.
Table 5 - Tag Structure
Byte 7 6 5 4 3 2 1 0
Name UID 7 UID 6 UID 5 UID 4 UID 3 UID 2 UID 1 UID 0
Bit 64…57 56…49 48…41 40…1
Value
SLI E0 04 01 Unique Serial Number
SLI-S E0 04 02 Unique Serial Number
SLI-L E0 04 03 Unique Serial Number
FRAM E0 08 01 Unique Serial Number