Originally Posted by
roboticscnc
Turns out there is something wrong with the servo or encoder. The drives that weren't locking the servo work with another servo.
The settings are a different problem. It seems like the settings are still in there but can't be viewed properly or changed, otherwise I wouldn't be able to drive a servo with a Main Gain setting of 1.
I've had no trouble changing settings in the past so don't know what's changed.
I've contacted DMM and they offered to check my drives but realistically I'm better off just getting new 16 bit drives and servos as I can't get the 14 bit servos for all the drives I was keeping for spares.
I only asked on this site if the newer drives had the same communication problems as the older ones before buying a whole lot of new ones.
Still don't know but unless anyone else chimes in with problems I'll probably go back to using DMM gear.