Martin K wrote 2014-05-16 16:43:
> On 5/16/2014 10:00 AM, Jan-Erik Soderholm wrote:
>> Regarding USB, I find that rather restrictive in a factory/production
>> environment. You need some other "computer" within an USB-cable-lenght
>> distance from the "target". With serial connections you are more flexibl=
e.
>
> USB hasn't been that restrictive for me. I have a 10 meter powered USB
> extension cable ("1 port hub") that goes to another USB hub that
> branches out to the end devices. It works really well at high speed USB
> 2.0 limits. Sure, you can run RS232 farther, but not at same bandwidth
> (if you care.)
>
> -
> Martin
>

We have serial ports accesses from our production system over
800 Km away (almost "the other end" of Sweden). 4 different
geographical locations in total. This uses the Lantronix terminal
server (or similar) I linked to before and for the production
system it is just as the equipment (barcode scanner or whatever)
is direct attached, but on the corp WAN. Bandwidth? I think all
our equipment runs at 9600.

 > Wouter
 > (who grew up with the same DEC hardware)

The best. :-)

Jan-Erik.


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