Toward an open-architecture specification language for machine control
Daniel W. Engels, Sanjay Emani Sarma · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 1999
Current machine control operating environments rely heavily upon G codes to specify the desired machine behavior. G codes provide a sequential non-preemptive execution semantics that, together with the operating environment, allow for precise control of the machine. However, G codes do not allow for the type of reactive behavior specification required in the next generation of open architecture manufacturing system and propose the semantics for a language that meets those requirements.