Perhaps it accepts a command to start the scanning? Or else another method is used such as a power button, etc? When you get the actual device, the manual or the website should tell you more...



>>See my other message I just sent you in the other thread. Do you have a USB device which accepts data (commands) and responds with data you can use for testing?
>>
>>
>>>>Ed's Faq does it for you:
>>>>

>>>>LOCAL oComm, i, cOldErrorHandler
>>>>DECLARE aComPorts[16]
>>>>aComPorts = .T.
>>>>cOldErrorHandler = ON('ERROR')
>>>>FOR i = 1 TO 16
>>>>  oComm = CREATEOBJ('MsCOMMLib.Mscomm')
>>>>  oComm.CommPort = i
>>>>  ON ERROR aComPorts[i] = .F.
>>>>  oComm.PortOpen = .T.
>>>>  oComm.PortOpen = .F.
>>>>  oComm = NULL
>>>>  ON ERROR &cOldErrorHandler
>>>>ENDFOR
>>>>For i = 1 TO 16
>>>>	IF aComPorts[i]
>>>>		? [Comm Port ] + ALLTRIM(STR(i)) + [ is valid]
>>>>	ENDIF
>>>>ENDFOR
>>>>

>>>>
>>>>>>Up to 16,
>>>>>>
>>>>>>FAQ #7943
>>>>>>
>>>
>>>Thanks Tracy but what about USB ports?
>>>
>>>Colin
>>>>>>>Hi all,
>>>>>>>
>>>>>>>is there a vfp command that can give me the number of serial ports installed ?
>>>>>>>
>>>>>>>Best Regards,
>>>>>>>Hans
>>>>>
>>>>>Jim
>>>>>
>>>>>Is there a VFP command which can tell me what those ports are?
>>>>>
>>>>>Thanks
>>>>>
>>>>>Colin
>
>
>Tracy
>
>Struggling to answer your questions - at the moment the first of my trial USB scanners comes tomorrow - I assumed it was only a reader and therefore could not accept data
>
>I had thought that if I knew the port ID (hence my original question) I could access the data with FGETS() commands - and do this in a loop - am I wrong to do it this way?
>
>
>
>Colin