The outputs on the IP-A are Sourcing outputs, ie they put out 24v when active , your drives inputs are sourcing, they also output 24v which you have to put to 0v to make active. You will have to make an opto board or use relays I would think.
For testing you could just use a switch or even just joining the Input for the Run to the 0V of your supply, obviously Mach will not be controlling it.
Bit of a PITA that the Asian drives work this way, most European and USA drives have sinking inputs although some can actually be switched, my Lexiums can (just all though, not individuals)
Hood