- 21 INTRODUCTION.................................................................................................................. 101.1 HOW TO DOWNLOAD DATA FROM SCANNER ............................................................ 101.2 COM DEFINITION FOR HT6XX/PA96X/PA982/RH767 ................................................... 111.3 USEFUL SAMPLE PROGRAM ........................................................................................ 111.4 GET SDK FROM UNITECH?............................................................................................ 122 USI.DLL – UNITECH SCANNER INTERFACE DLL............................................................ 132.1 Register the application to the USI DLL ................................................................................................................ 132.2 Unregister the application from the USI.DLL ....................................................................................................... 142.3 Enable / Disable Scanner........................................................................................................................................... 142.4 Reset Scanner .............................................................................................................................................................. 142.5 Get error code .............................................................................................................................................................. 142.6 Returns the system error code ................................................................................................................................ 152.7 Get scan data................................................................................................................................................................ 152.8 Get length of scanned data....................................................................................................................................... 162.9 Get Symbology name ................................................................................................................................................. 162.10 Clear scan data system buffer ............................................................................................................................. 182.11 Good read indicator ................................................................................................................................................ 182.12 Wait for acknowledgement of the last sent command .................................................................................. 182.13 Save setting to profiles .......................................................................................................................................... 182.14 Save scanner setting into specified file............................................................................................................. 192.15 Change scanner setting from specified setting profile ................................................................................. 192.16 Automatically enable scanner beam with pressing trigger key .................................................................. 192.17 Stop auto scanning function ................................................................................................................................ 202.18 Check if auto scanning is enable ........................................................................................................................ 202.19 Check if Scan2Key.exe program is running or not......................................................................................... 202.20 Test if Scan2Key is enabled.................................................................................................................................. 20