User's Manual
Table Of Contents
- IMPORTANT NOTICES
- RELEASE NOTES
- INTRODUCTION
- QUICK START
- UNDERSTANDING RFID READER
- COMMUNICATION INTERFACE
- SETTING UP A WPAN CONNECTION
- SCANNING UHF RFID TAG
- DEFINING OUTPUT FORMAT
- ALTERNATE MODE
- SPECIFICATIONS
- FIRMWARE UPGRADE
- ASCII TABLE
- SCAN CODE
- STATUS CODE
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1800 Series Handheld RFID Reader Reference Manual
4.5 ACCESS TAG
4.5.1 TAG MEMORY
A tag memory is divided into 4 banks as below:
Reserved Memory:
This area of memory holds the tag’s passwords:
A 32-bit “Kill” password that allows a Tag to be permanently silenced.
- The default Kill password value is zero.
- The Kill command will only execute if the password has been set, i.e. is non-zero.
A 32-bit “Access” password that allows the Tag to transition to the Secured state.
- A Tag in the Secured state can execute all Access commands, including writing to
locked blocks.
Reserved memory can be read-locked.
EPC Memory:
This memory includes three partitions:
A 16-bit CRC
- The actual data is the 1’s complement of the published CRC-16 definition.
A 16-bit Protocol Control (PC)
- 5 bits is for the length of PC + EPC.
- 2 bits is RFU (00
2
).
- 9 bits is for a numbering system ID (NSI), which may contain an EPCglobal
TM
header or an AFI as defined in ISO 15961.
An EPC (includes Header, General Manager Number, Object Class and Serial Number)
- The electronic product code of the object to which the Tag is attached.