Verkabelung RDC6563FG mit Fuji Alpha smart Plus

yes, as your said. the FFA and FFB are encoder feed back output for the controller(here are 6563 ); the RDC6563 controller will accept the FFA and FFB as a position feed back and also has a position feed back with a capacitor sensor to detect the height of the nozzle and output a analog speed signal to the servo drive to do a close loop control.
For a Z axis live focus control, it is a little bit complex. if possible, pls send me the servo drive datasheet in English
my email is :ssh@rd-acs.com

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  : Hello, maybe someone can help me, after a long time I finally managed to get the Z axis to work. But when adjusting the height, the Z moves down to the material and as it approaches it also moves away, but does not return to the desired height. What am I doing wrong please help. Greetings Matthias