I am trying to make a stand-alone controller for 3 hydraulic axes. The application shall consist of trajectory planner and simple P or PID regulator with feedback position of hydraulic cylinder.
Now I have planned to use HF high feature ET200S modules that have fast analog inputs/outputs and they are all synchronized when writing/reading signals, this is so called isochrone mode, until here everything is clear.
I would like to use IM151-3 PN CPU instead transmitting/receiving data over profibus, and here I don't find an answer. ET200s modules can be syncronized when using HF profibus coupler, but I don't find how to synchronize them using CPU that is present on backplane on ET200S directly.
I want same functinality of isochrone mode except that I want to use ET200S CPU that is directly connected. Is this possible and if so what OBs are used, thanks.