Ok, so the energy bar counts as 1 module, but I can have 8 devices plugged in. So basically, I can hook up an I/o switch to a ph module, add an energy bar and write programs off the I/o inputs. That would be 3 modules plus the display
The i/o switch won't count as a module but the ph module will. You would have 2 plus the display. So 3 total.
