wire... data wire that is.... and the code [RE-wrenches]

[Kurt Albershardt]

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I was going to suggest B&B as well, but am wondering why not just install a PCI card with an RS-485 port and be done with it?  They also sell versions with isolation which may or may not be necessary with the Sunny Boy, perhaps someone else can comment on that?





--On Friday, April 16, 2004 2:14 PM -0500 John Raynes <john at raynes.com> wrote:

>
> Geoff,
>
> Keep in mind that USB and RS232 completely different interfaces, not just the same thing with a different adapter!  I don't know if the SMA software supports both USB and RS232 drivers, but you'll need to choose one or the other, I'd think, and then either get a RS232/RS485 adapter, or a USB/RS485 adapter (if such an animal exists, I guess it does).  I'd recommend staying with RS232 if you can, unless the SMA folks suggest otherwise.
>
> Good source to start for RS232/RS485 adapters would be
> http://www.bb-elec.com/convert_serial_port/convert_serial_port_interface.asp
>
> Also, be aware that a lot of readily available instrument and data cable is only rated to 300V.  Don't know if that could be a problem, but 600V rated stuff can sometimes be a bit harder to come by.
>
> Regards,
> John Raynes
> RE Solar
> Torrey UT
> www.re-solar.com
>
>
>
> At 03:51 PM 4/16/04 -0400, you wrote:
>
>> ALSO - Any cheap source and price for the required RS232-485 adapter?  (and
>> probably a 9 pin to USB adapter too as SMA stuff seems to be in 9 pin and
>> the computer industry seems to be in USB...
>>
>> Two ears of corn and a chunk of concrete for everyone (Cheers to Matt from
>> OH)
>>
>> Sincerely,
>>
>> Geoff Greenfield

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