IEC 62386-303:2017 specifies a bus system for control by digital signals of electronic lighting equipment which is in line with the requirements of IEC 61347, with the addition of DC supplies.
This document is only applicable to IEC 62386-103:2014 and IEC 62386-­103:2014/AMD1:— input devices that deliver occupancy information to the lighting control system through movement or presence sensing.