I found the problem.
In one of the scripts I used the IP address which was assigned by the router before.
I substituted it with the localhost address 127.0.0.1 and all works fine.
@Merv, thanks for your help!
Kind regards
coopi

To get the digital input status i use a callback function in my python script.
You wrote you read the input.
Which function you use to read the digital input?
coopi

There are some python scripts which report errors.
For example socket.py and _core.py within the python 2.7 library.
How did you config your PI?
Did you setup a static IP address and if so where?

coopi

Hi,
I'll use the UNIPI board in combination with evok without any network connection but when I separate the UNIPI board from my network I get the error message Network is unreachable.
In my network everything works fine.
I use the relay outputs and the digital input.
Is there a way to use the UNIPI board with evok, or another API, on an island without any network connection?
Kind regards
coopi