On eBay I bought MACH3 4 AXIS CNC Wheel Hand Engraving Machine For ModsMach3 MODBUS Pendan MPG. Besides, I got some basic instructions how to configure Mach3 to operate hand controls. The problems begin when I try to move the axis of the keyboard. The axis moves about 3-4 mm and then stops, and if I want to move the axis to increase the length I need to press on the keyboard. If you try to press home, but each axis moves to 3-4 mm mach 3, Digital readouts set to zero. I have tried all possible settings on manual control, but it is no different. I tried to disable command from the COM1 port. If you turn off the port and pin settings / Mod Bus input and output support in the general config Run macropump keyboard operates correctly.