Hello @Raph7454, all of the IO on the Unipi work the same as other CODESYS devices. Use the device tab to map the IO into your application. The data sheet provides guidance on each device. The package also installs a new application template so that in one step you can create a new UniPi application with all devices installed ( you will just need to add the expansion module).
Regarding how to download, login etc. CODESYS for UniPi is adding device drivers to CODESYS for raspberry pi. There is a large active forum of users on the CODESYS forums. I suggest that for general CODESYS questions you will find answers to most of your questions already posted there.
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