| Abstract |
Several manufacturers of machine tools, drives and Numeric Controllers are working together on a proposal for standardization of a real time communication system that covers the specific requirements in a machine tool in a technical and economical optimal way. All information between the NC and the drives will be exchanged via a plastic fibre optical ring. A time slot assignment guarantees a collision free, deterministic access to the ring. Since the digital communication system is part of high speed closed control loops, several synchronizations are to be introduced to join data transmission and data processing in the NC and in the drives. The application-specific contents of the exchanged messages can be rearranged each time the ring is initialized. |
