I'm just learning about servos, and I think I've got some of the basic concepts of servo tuning. I understand that what's usually done is to command a move and compare the commanded position to the actual position reported by the encoder, and that this is typically done with the motor installed and connected to it's intended load, so that the inertia and resonance of the whole system can be tuned.

What's puzzling me is how one goes about tuning a pair of servos that need to work in tandem, which is what I've got on the Multicam router I recently bought.

I'm getting an "excessive following error" fault occasionally on one of the drives, so I'm wondering if they need tuning.

Thanks for any help.

-Jim Hart