I have installed Griffin PowerMate, but the only thing it does is to change between axis in the status window. When I turn the wheel, nothing happens.

Do I need to change any configurations in Mach3?

The Griffin site doesn't give any clue.

What are you trying to do with it.

I try to jog the axis by rotating the wheel, but nothing happens.

If you look under Config/System Hotkeys you will see the box for setting the keys to jog the axis.

You can set whatever keys you like to jog the axis.

I assume the Griffin puts the equivelant of keyboard strokes into the computer, so select which jog you want to configure, e.g. X++ and then press a key, or do what you want to do with the Griffin and see if it registers.

If the Griffin is a rotary switch - i.e. you turn it, I cannot see how you can replace a keystroke with it. In Mach3, if you press a "jog" key, the jogg continues until you release it. It is not a mouse like function with continuous movement.