I've had a number of problems when plugging into industrial devices that have a USB interface. The lack of isolation is oftentimes a problem. Othertimes my laptop will confuse the industrial device with another common USB device like a stick drive, even if the driver for the industrial device has been loaded. I've never had similar issues with RS232 or Ethernet interfaces.
Dave On 3/1/2014 6:41 PM, Steve Blackmore wrote: > On Sat, 01 Mar 2014 18:15:29 +0100, you wrote: > > >> When I've learned something about hardware interfaces and reliability in the >> past two or three years then it is to stay as far away from USB as possible >> whenever something else than a classical HID (Mouse, keyboard, flash drive, >> etc.) should be connected to a computer. > A bit of a sweeping statement :) > > There are good USB based controllers out there that work perfectly well. > All depends on good hardware design and how the software/firmware uses > it. The majority are poorly implemented and poor PC setup also > contributes a fair amount of problems. In windows most don't turn off > hardware power saving and then moan when the USB port goes to sleep. In > fact the majority aren't even aware it exists or where to find it! BTW - > same applies to ethernet ports ;) > > Steve Blackmore > -- > > ------------------------------------------------------------------------------ > Flow-based real-time traffic analytics software. Cisco certified tool. > Monitor traffic, SLAs, QoS, Medianet, WAAS etc. with NetFlow Analyzer > Customize your own dashboards, set traffic alerts and generate reports. > Network behavioral analysis & security monitoring. All-in-one tool. > http://pubads.g.doubleclick.net/gampad/clk?id=126839071&iu=/4140/ostg.clktrk > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ Flow-based real-time traffic analytics software. Cisco certified tool. Monitor traffic, SLAs, QoS, Medianet, WAAS etc. with NetFlow Analyzer Customize your own dashboards, set traffic alerts and generate reports. Network behavioral analysis & security monitoring. All-in-one tool. http://pubads.g.doubleclick.net/gampad/clk?id=126839071&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
