It’s hard to tell because NOC is a system of occupations classified upon specific job tasks and duties. Specifically, for robotics, you must identify your job duties and what is the most appropriate job description that may fit yours in. It could be either a hardware-centric job that might be identical to NOC 2132/2232 or a position more leaning to software and A.I. area, which could be classified as NOC 2173.
It’s your task to see which one is the best fit for you to put in your application. Good luck!