Hoping someone here can help.
Our group purchased a ControlLogix L73 to replace a ControlLogix L71 currently on a machine (we needed more memory). We did the following:
1. Installed matching frimware to new L73 (v21.011).
2. Uploaded project file from L71.
3. Powered down machine. Removed L71 CPU card from chassis, replaced with L73.
4. Powered up machine.
5. Changed controller type in project file (L71 to L73) and downloaded to new controller.
Now, everything looks good in the controller, but the Kinetix drives attached to the controller are acting all screwy now... the position shown from the servo feedback does not match what it was on the old controller. Nor does MAH work (homing is set to 'Active' for the drive, but when MAH is executed the drive performs what looks like an 'Immediate' home (just resets position to zero without actually moving the servo - regardless of where the servo is).
If we swap the old controller back in the positions are all reading correctly again and the machine functions normally.
It seems obvious that SOMETHING isn't being transferred into the new controller... but what is it and how do I get the new controller to work with these drives as the old one does?
Thank you,
Mike