OK you mean injection molding controller..
That would not be something I would control with Mach3 you would be better served with a PLC in that application.
Mach3 is a machine controlling dealing with drives and machine proceeses like mill, lathe, ect doing precise coordinated moves across 6 axis.
NOW could it be done

more than likey. Would I trust it for that application NOPE. Mach3's strong suite is NOT precise synced timing across it CB language and its motion side. Besides most IMP machines do not use servo drives for motion they run hydraulic's with PLCs for precise timeing constrants. Without the precise timing you may end up with PSO. Plastic squirting out. (;-) That is an old shop joke.
But please keep us informed on how it works out.
Just a thought, (;-)