Homing question about: define Z_HOME_DIR (no replies)

It seems my CNC 'forgets' about Z home.

Z has no end stops. In Marlin config*.h it's: #define Z_HOME_DIR 0

I think there should be 1 or -1 - is 0 correct or should I comment the line out?


#define Z_AFTER_HOMING 0
#define Z_HOME_DIR 0

Z is a balance cam and should stay centered, in the *.h it's written as:

#define Z_MIN_POS 0
#define Z_MAX_POS 59

Would it be better to write like:

#define Z_MIN_POS -29.5
#define Z_MAX_POS 29.5

Controlling software is OpenPnp, which does not give strong Marlin support.