Newland NLS-EM2000, Руководство пользователя

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Access the Scanner with Your Program
1. Use CreateFile to access the engine as a HID device.
2. Use ReadFile to deliver the scanned data to the application program.
3. Use WriteFile to send data to the engine.
For detailed information about USB and HID interfaces, go to www.USB.org .
Acquire Scanned Data
After a barcode is decoded, the engine sends an input report as below:
Bit
Byte 7 6 5 4 3 2 1 0
0 Report ID = 0x02
1
Barcode Length
2-57
Decoded Data (1-56)
58-61
Reserved (1-4)
62 0x00
63 - - - - - - -
Decoded
Data
VID/PID
USB uses VID (Vendor ID) and PID (Product ID) to identify and locate a device. The VID is assigned by
USB Implementers Forum. Newland’s vendor ID is 1EAB (Hex). A range of PIDs are used for each
Newland product family. Every PID contains a base number and interface type (keyboard, COM port,
etc.).
Product Interface PID (Hex) PID (Dec)
EM2000
USB DATAPIPE 8001 32769
USB HID-KBW 8003 32771
USB COM Port Emulation 8006 32774
HID-POS 8010 32784