I stongly advise you not to use TB6600 based drivers, it is an old chip design and they have a poor reputation for reliability. There are loads of more modern drivers available with similar ratings, I suggest you look at something like this, also from CNC4YOU:

https://www.cnc4you.co.uk/Microstepp...tepping-CW5045

The only difference in labelling really is that they bring out both sides of the opto-isolated inputs, you just ground the side labelled "-" on each.