Unitech PA982 Instrukcja Użytkownika Pobierz pdf (Strona 83)

12.7.4 ACCESS_DATA

Description:

Contain access data of the tag return by the antenna.

Define:

typedef struct ACCESS_ DATA _TAG{

INT16U unEPCLength;

INT16U unRSSI; //The receive signal strength

BYTE pnEPC[68]; //PC + EPC + CRC

INT16U unDataLength;

BYTE pnData[256]; //Access data or access Status

} ACCESS_DATA, *LPACCESS_DATA;

Fields:

unEPCLength–The length of the EPC(include PC and CRC)

unRSSI – The receive signal strength.

pnEPC[68] – Data of EPC(2 bytes PC + EPC + 2 bytes CRC).

unDataLength – Access Data length.

pnData[256] – Data retrieve from Tag of write to Tag.

12.7.5 RFID_INVENTORY

Description:

Inventory operation parameters.

Define:

typedef struct RFID_INVENTORY_TAG {

HWND hWnd; //Parent window

RFIDPROC lpfnStartProc;

RFIDPROC lpfnStopProc;

}RFID_INVENTORY;

Fields:

hWnd – The parent window which issue the Tag operation.

lpfnStartProc – Application-defined callback function. Thre RFID Reader Interface call

this function before execute Tag operation.

lpfnStopProc – Application-defined callback function. Thre RFID Reader Interface call

this function after finished Tag operation.

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Unitech PA982 Instrukcja Użytkownika Strona 83