Patent ID: 6577918
Filing Date: 2003-06-10
Classification: G05B

Abstract:
A process for processing safety-relevant data in a safely system for a machine with several machine part control nodes, the process comprising the steps of:providing each control node with a microprocessor and data memory; connecting the nodes with plural channel inputs providing redundant safety-relevant data; connecting plural channel safety-relevant outputs to control safety-relevant control elements; providing serial lines; connecting each node to another node to one of the lines via an income serial interface and connecting each node to another one of the lines via a relaying serial interface to form a bus ring with connected nodes; at each node receiving safety-relevant data at the plural channel inputs and processing the received safety-relevant data, the processing taking place in parallel at the respective nodes; upon processing received safety-relevant data, each node transmitting processed data to a next node around the bus ring via the relaying serial interface and simultaneously receiving processed data from another node of the bus ring via the incoming serial interface.