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Topic: Arduino porofibus (Read 391 times) previous topic - next topic


Aug 20, 2019, 10:55 pm Last Edit: Aug 20, 2019, 11:00 pm by Tady
Hello everyone!

I have been searching for a Profibus slave Arduino device for a while now. And there is absolutely nothing out there...

I did come across this thread (in German) that some guys over there made a woking example. But it runs on a MSP430F2252


Anyway I decided to adapt the program to run on a Arduino and it works on a Mega2560 it can easily be adapted to other MCUs but that is up to you

I decided to share this because there is nothing useful out there and I really hope this can help someone..

All of the description is in the .h file and the GSD file is also itn the zip.

I am not an expert on the Profibus protocol so I can't help you with that but you can find alot of info on the link I provided above (google translate is your friend :) )
I ported the code for a friend who is an expert with Siemens devices so he was the one setting up the PLC.

The speeds are low ( again see the .h file) but it works for hobby and home projects :)
We got it working to 45.45K baud and I think that is enough. If you want to go above that you would probably need a faster MCU (Teensy?)

Anyway hope I helped someone ;)

Please leave a comment if you got it working

EDIT: It was tested on an S7-315 :)

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