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 USB dropping connection to RS485 adaptor 
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Joined: Tue May 21, 2013 1:04 pm
Posts: 2
Post USB dropping connection to RS485 adaptor
I am using the fit-pc2 for monitoring my solar system. I have an RS485 to USB adaptor (Prolific) connected to a rear port on the fit-pc2. After a period of time (somewhere around the hour mark) the PC drops connection with the USB device. The only way to fix it is unplug and reconnect to a different USB port or reboot the PC. On some occasions this has also caused the USB keyboard and mouse to lock up.

PC is running Windows 7 Pro. I have been using the adaptor on a full size desktop PC with no issues.

Any ideas?


Tue May 21, 2013 1:11 pm
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Joined: Thu Jun 02, 2011 1:13 pm
Posts: 1260
Post Re: USB dropping connection to RS485 adaptor
You cab try to plug the keyboard and mouse to a one rear dual USB header, and the RS485 adapter to an other

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Gabriel Heifets

Fit-PC2/3/IntensePC support.


Sun May 26, 2013 12:30 pm
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Joined: Tue May 21, 2013 1:04 pm
Posts: 2
Post Re: USB dropping connection to RS485 adaptor
I no longer have a keyboard and mouse plugged in as I have vnc running on it. I continue to experience issues with the rs485 adapter which works fine on another PC.


Sun May 26, 2013 5:33 pm
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