Hi guys,

I have the opportunity to buy a Sieg milling centre with original Siemens 808D controller.
The vmc is pre wired for a 4th axis however the machine manufacturer is telling me that the 808D cannot actually support a 4th (rotary) axis and I would need to look at the newer 808D Advanced controller for that...

Does anyone out there have experience with this contoller and adding an A axis? Is it possible to retrofit?? Do I need to upgrade?

Appreciate your feedback.
Thanks