Hey Stephan,
the best thing is always to read the fine manual. You should find all parameters there. Note that H100 and V70 are practically identical.
If you can start the spindle with the front keypad but not with the RS485 connection, then the setting “Source of RUN command” is not set correctly. “Source of RUN command” and “Source of SPEED” are the settings that say from where the VFD is controlled.