Manufacturer Data
First block is Manufacturer Data. It is consist UID number (sometimes known as Card ID
or Serial Number). In general it is readonly block but some manufacturer produce fake
Mifare tag which be able to write that block.
Data block
Each sector contains 3 data blocks (except sector 0, which contains 2 blocks). Each block
stores 16 bytes of data.
Data block can be configured by the access bit as:
- read/write block
- value block
Sector Tralier
At end of every block is Sector Trailer. It contains secret key:
- key A (
obligatory key)
- key B (optionally key)
and configuration bits for access data block.
7.2
Modbus Address
The following MODBUS RTU functions are supported:
- 0x01 Read Coils
- 0x03 Read Holding Register
- 0x05 Write Single Coil
- 0x06 Write Single Register
- 0x0F Write Multiple Coils
- 0x10 Write Multiple Registers
For proper operation of modbus protocol it is necessary to disable the RFID M1/
U1 Configurator application.
Holding Registers table:
Address
R/W
Description
1000
R/W
IsNewTag
1-tag recognized
0-no tag
Flag must be reset (clear to 0) before read next tag.
Same as Coil Register 1016
1001
R
UID Length
– lenght of Mifare UID (4,7 or 10)
1002 -1011 R
UID
1012
R
Card Type
: type of read tag
1017
R
MODEL ID
1018
R
Software Version
1019
R
Hardware Version
1020
R/W
Mode OUT1
:
1- bistable
2- astable
3- time
1021
R/W
Time On OUT1
– time determining how long the output will be
enabled (1-65535) (*0,1 sec) e.g. 120 = 12 seconds
User manual RFID IND Modbus Mif
Page
14
z
22
[B03]
