Reading data from S7-400 in Linux

All I need to do is to read the data from PLC and store it into a MySQL database.

Does anybody know if there is software to do this in Linux? The connection should be ethernet, not MPI.

I've tried Thomas Hergenhahn's VISUAL, but it is too bugged and nearly impossible to get working on some computers...

Thanks.

-F-

Siemens has a sofware driver package for Linux HERE.
The regular Softnet packages costs approx 500-600 Euros, and approx 300 Euros for the "Lean" version. Dont know what the Linux version cost, would be interesting to know it.

There are examples on how to make Send/Recieve data transfers under Windows with VB code (without the need for buying any additional software).
Obviously it should be possible under Linux as well, try to search for "S7 send/recieve Linux".

If you are in a hurry, and need something working here and now, you should consider the shrinkwrapped Siemens package.

There is an example for Simatic Net with Linux at Siemens Support site, search for ENTRY ID:574211.

There is not much info what the example is about, or if it works only in conjunction with Simatic Net software or not.

Ok, I'll see if those examples are any good for me. I'm hoping to find a free solution, so buying things is not an option. Attleast not yet...

-F-

You could also look into the LIBNODAVE library for Linux.
It is for MPI, not Ethernet. But could be interesting for you.

Just checked Libodave a little more.
Actually it does support Ethernet !
You can find it here: http://libnodave.sourceforge.net/index.php

Good luck.