Rockwell-automation 56RF RFID System User Manual Uživatelský manuál stáhnout pdf (Strana 22)

22 Rockwell Automation Publication 56RF-UM001A-EN-P - October 2011

Chapter 2 RFID Components

Smart Label IC – Secure (SLI-S)

The 2048 bit EEPROM memory is divided into 64 blocks. A block is the

smallest access unit. Each block consists of 4 bytes (1block=32 bits). Four

blocks are summed up to one page for password protection. Bit 0 in each byte

represents the least significant bit (LSB) and bit 7 the most significant bit (MSB),

respectively.

The memory is divided into two parts:

• Configuration Area: This memory area stores all required information,

such as UID, EPC data, write protection, access control information,

passwords, etc. Direct access to this memory area is not possible.

•User Memory: This memory area stores user data. Direct read/write

access to this part of the memory is possible depending on the related

security and write protection conditions.

The table below shows the memory organization of an SLI-S tag.

Table 12 - SLI-S Memory Organization

Page Block Byte 0 Byte 1 Byte 2 Byte 3 Description

-6 -24 Configuration area for internal use

-23

-22

-21

::::::

-1 -4

-3

-2

-1

00 User Memory

10 pages

4 blocks per page

4 bytes per block

Total: 160 bytes

::::::

936

1 2 ... 17 18 19 20 21 22 23 24 25 26 27 ... 155 156

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Rockwell-automation 56RF RFID System User Manual Uživatelský manuál Strana 22