Tag RFID Uhf umume dipérang dadi papat wilayah:
【Cadangan】 : alamat: 0-3; alamat: 0-1 Simpen sandi mateni 32bit (mateni). Nilai standar yaiku 00 00 00 00.
2-3 Simpen sandhi Akses 32-bit. Nilai standar yaiku 00 00 00 00.
Nalika wilayah lokal ora ndhelik utawa ndhelik, the data in the area can be rewritten at will.
【EPC(EPC Area)】 : alamat: 2-7; Store the 96bit ID number, which is the area where the data that is normally read out by default by our device is stored. Nalika wilayah lokal ora ndhelik utawa ndhelik, the data in the area can be rewritten at will.
【TID(TID area)】 : alamat: 0-5; Store a 48-bit globally unique and unalterable ID number.
【User(User area)】 : alamat: 0-31; Store 688-bit data. By default, each address is 00 00. If the area is not encrypted or encrypted, data in the area can be rewritten at will.
The above areas are explained with the Alien H9, a more commonly used tag chip, as an example. Different chips, the corresponding regional data and the actual role may be different
To read the USER area data, it is recommended that you first look at the EPC protocol, EPC several basic operations are read, nulis, lock, mateni.
The protocol document is very detailed, in addition, if you are doing application development, to operate according to the API provided by the manufacturers, you need to read the API functions of the manufacturers.
If you are doing the underlying baseband development, you should be more familiar with the EPC protocol.