which card to buy

thank you, I will take the 5v directly from the PC power supply and add a bit of filtering to it.

now I would like to know hot to do the tool change and selection, I have never used a machine with more than one tool before, I see that it has a tool table where I can add tool lengths offsets and other stuff, but how do I tell the machine which tool to use?

the tool selection is done by pneumatic pistons I can connect it to hal pins and it is a matter to turn pins on and off no carousel or things like that. I'm still on the process of learning.

yes it is just one piston per tool, it has 16 small pistons that are simple pistons controlled with just a single pin, then there are another 4 big ones that have up and down sensors 2 of them have dual solenoid valves

thanks for the link, I will give a good read.

I was also looking at classic ladder tutorials they may get handy.

and one more question, I have got the 7i71 for the io I have measured the current of all solenoids and everything else that will be connected to it and none is above 230ma way closer to the 300ma from the documentation that made me feel a bit uncomfortable
should I add relay boards or something to buffer the current or I may be OK to leave just as is, off course I will add the extra diodes that are recommended for bigger inductive loads.

The (8 output) driver chips are limited to ~1.4A each so you could not have all 8x 230 mA outputs on one chip active at once
without eventually causing overheating. If you only have a few on at once it should be fine (as long as you have flyback diodes)

Thanks for the information that will work perfectly for me I will start testing it, I'm also worried about the offsets, I realized I'm to noob for a machine this big.
I had no idea about subroutines and how to use them so I was reading about and also giving some maintenance to the pneumatic system.

I will also use that for the rest of the machine that basically is the vacuum cups to hold the work piece and some extra pneumatic cylinders on the bed that I don't know what they were intended for My first guess is to align the piece so I will use them for that.