Hello, I also retrofitted such a machine last year. Since I had modern AC servos and power amplifiers with Step/Dir input on the shelf, I converted to a 7i76e. If I find time I will make some pictures in the future and open a separate topic. Since I still have the servo amplifier, servos and Power Supply left over from the conversion I wanted to ask if anyone here is interested before I sell elsewhere. I think we could agree on a fair price. Location is Germany.