Thanks to you all for replying. What I am actually looking for is a solution for the totality: PLC, additional I/Os, field bus (if the price allows it), some thing to run (motor, compressor, anything with reasonable price). I also need to get access som some tutorial or otherwise educational material. What I have a lot of is patience and a serious attitude to these things. What I do not have a lot of are funds in size of a major industrial company. My price range for the whole thing will have to be between 0-500 €. I refuse to put myself further i debt.