AFAIK you cannot use these with Linux or most controls, if you replace with a standard quadrature encoder it has to have commutation pulses on it and it has to be aligned to the rotor position.
Digging a bit deeper, I discovered that the absolute encoders appear to be quadrature differential but have battery backed position retention?
But I still cannot confirm the nature of the transmission output, I suspect it may be serial?
Al.
CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.