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Connecting a PC to the Fronius inverter - Page 3

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Posted by mas1683 on September 10, 2007, 2:32 pm
I've been attempting to get real-time data out of my Fronius inverter
as well.  Fronius tech support has been less than helpful in this
endeavor.  Their response is "well, the protocol is out there, so you
need to write your own program for it, and no, we don't know of
anybody who has done this before."

I'm currently using the Fronius IG 2500-LV inverter with a ComCard and
DataLogger Easy Box.  I'd be happy to beta-test software that anybody
has written to pull data into some sort of a database file.  Either e-
mail me directly or feel free to post a response here.



Posted by Rick F. on September 17, 2007, 6:16 am

Sounds reasonable..

Using this setup, is there any reason to use a DataLogger Pro?  You
make it sound like your PC is acting like a Data Logger box on the
'network' driven by the CAT5 cable.. Am I misinterpretting what you

I do embedded C++ 5 days a week as my 'day' job.. If it's just a matter
of changing out the serial port access routines to be more Unix based
as well as the semaphores and whatnot, that shouldn't be too difficult.

-- Rick

Posted by Christian Kaiser on September 17, 2007, 8:06 pm
 I stand corrected.

The Datalogger is the part which has the RS232 interface, and the COM
card is needed for the internal communication. Or so... ;-)

I directly communicate with the Datalogger (right now via RS232, and
hopefully soon with the USB Datalogger Box). All the data I read
(current state and historical data, datalogger clock and such) is read
from the datalogger, or through the logger (the protocol allows me to
set a "destination ID", and I guess this is routed to the respective


Posted by Christian Kaiser on September 17, 2007, 8:33 pm
BTW: "not too difficult" is relative for a multithreaded, event-driven
I/O for the communication ;-)

Okay, that's only a small part of the program, but I was reckless using
own classes and Windows API. Sigh. I understimated the wishes that
others could have (Linux, embedded device). I agree that a small
embedded device processing the data is preferrable when a PC is not
already running.

I want to wait a bit until I see my application really working, with
error state detection and notification, etc. Then, when it's reliable,
we could think of recoding with a source so that is compatible to other


Posted by dogbreath on September 19, 2007, 7:14 pm
 On Mon, 17 Sep 2007 22:33:41 +0200, Christian Kaiser wrote:

I would like to propose Qt as a C++ multiplatform toolkit. Windows, *nix,
Solaris, HP-UX, and others I don't recall. Also, it comes in flavors for
embedded device use.
Check out trolltech.com or grab the latest issue of Linux Journal to see
their Qtopia (embedded toolkit) which has been optimized for use in cell


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