Originally Posted by
Control_CNC
Hi, I see this is an old post and you may have resolved your issue however just in case you are still struggling, nck battery is located on the ccu. If you open the electrical cabinet, the ccu is the big unit that will have encoder feedback cables plugged in, and a red 7 segment numerical display. At each corner you will see a knurled torqx screw. Undo them, (after disconnecting all of the cables which be sure to make note of so they go back in right place). Slide out the ccu, and on the board you will see a small green lithium battery. Change this battery as quickly as possible as it doesn't hold memory for long before it loses NC and plc data, I would advise if you have the means, make backups of NC &plc before changing to be safe. Refit ccu and it should all be good.
As an extra precaution I always home the Machine and ensure tool is on pocket 1.