Isn't that just exactly what transaction CO02 does? CO01 is for creating production orders so what sense does it make to have it display mode only?
Maybe your goal is to stop then end user changing the component assignment that is automatically detected by the system. If so, personally I think a better starting point would be PP configuration or user authorizations rather than looking to change the screen by whatever method. As we don't know what you are trying to achieve it's hard to offer much more advice maybe all you need is to change transaction to CO02