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USB to RS485 adapter stopped working (Windows10 Pro)


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Guest Lucas Larry
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DELL 7010, Windows 10.0.1904.1 (10 Pro), latest updates, USB-to-RS485 adapter uses SiLabs chip. Same problem now with another adapter that uses FTDI chip.I have controllers that use the RS485 bus to connect to the manufacturers software in my Windows 10 Pro computer through a USB-to-RS485 adapter. The arrangement was working fine. I shut down the computer and disconnected the adapter to move the computer. No changes to hardware or software that I know of. Now when I tell the software to connect it can no longer find any of the controllers. There appears to be no signal from the adapter to the

 

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