"The ISO’s update will, for instance, include guidance on the maximum force with which a robot may strike a human it is working with."
http://www.technologyreview.com/news/531356/should-industrial-robots-be-able-to-hurt-their-human-coworkers/
What has that to do with ethics? That's simply putting limits in place to prevent unintended consequences. Ethics would be stating under what circumstances a robot may purposefully strike a human in the first place.
"The ISO’s update will, for instance, include guidance on the maximum force with which a robot may strike a human it is working with."
http://www.technologyreview.com/news/531356/should-industrial-robots-be-able-to-hurt-their-human-coworkers/