It is *always* the responsibility of hardware to reject input that would cause physical damage to the hardware (or other hardware or people or.). If they don't, then that's a design flaw, because that also means they won't stop when, for example, they hit a person who is in the wrong place at the wrong time, and suddenly someone is dead. They should have sensors to detect that they are about to collide with something, and they should stop. In fact, I would argue that the same is also true for your industrial robot arms. The hardware vendor can't control the software, so it has to be designed to accommodate or reject bad input, in much the same way as a function or method has to recognize invalid inputs and fail in a reasonable way (which could be an error message, an exception, etc.). Never the software when you're talking about a general-purpose computer that's designed to run various operating systems, etc. (less of an issue now that "drop dead" thermal shutdown circuits are fairly common). Or your fan quieting software doesn't monitor temperature and allows the CPU to overheat. two industrial robot arms try to pass through the same space simultaneously.
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