David,

Hi. I believe your starting point will be the "Communication" section of the 
docs. For the latest v17.3 this is the link:
https://doc.4d.com/4Dv17/4D/17.2/Communications.201-4385988.en.html

HTH.

Regards,
 
Narinder Chandi,
ToolBox Systems Ltd.
-- 

-----Original Message-----
From: 4D_Tech <4d_tech-boun...@lists.4d.com> on behalf of 4D Tech Mailing List 
<4d_tech@lists.4d.com>
Reply-To: 4D Tech Mailing List <4d_tech@lists.4d.com>
Date: Monday, 24 June 2019 at 23:52
To: 4D Tech Mailing List <4d_tech@lists.4d.com>
Cc: David Loeppky <dav...@chuckanutbay.com>
Subject: 2-Way USB Communication

    I am wanting to do 2-way communication with a USB device directly from
    within 4D.  I need to send command codes to the device and then receive
    data back from the device.
    
    Does anyone have experience with this?  Ideally, some help in finding some
    technical documentation on how to do this would be ideal.
    
    Thank you,
    
    -- 
    
    Regards,
    
    David Loeppky



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