I am making a DFD diagram for software that is going to run on a PLC to control a testing setup.In this setup i have 7 load cells and 7 hydraulic valves.

I am wondering if i need to show all 7 of them or just one. doing it with just one looks a lot cleaner. See below for examples.

The 2 ways i tried

The diagram is a bit more complex but i am showing this for simplicity.

I have tried both examples shown aboec but i am not sure which one to use. can somebody give me some advice?

Thanks already