PROFIBUS has been designed to allow configurations where redundant cabling is possible to take account of wire breaks. Also, NODE FAILURES can be configured to be ignored, or to trigger a ‘stop’ in the master. In this case unaffected nodes can continue operation. When a failure is identified the master immediately resends the telegram and it’s possible to configure the number of TIMES this is attempted. Information relating to the failure is generally AVAILABLE on a node, a module within a node and on a channel specific basis. Certification testing of devices through an authorized test laboratory ensures that potential failures conform to what is expected of them. Media redundancy can be achieved through dual master systems.

PROFIBUS has been designed to allow configurations where redundant cabling is possible to take account of wire breaks. Also, node failures can be configured to be ignored, or to trigger a ‘stop’ in the master. In this case unaffected nodes can continue operation. When a failure is identified the master immediately resends the telegram and it’s possible to configure the number of times this is attempted. Information relating to the failure is generally available on a node, a module within a node and on a channel specific basis. Certification testing of devices through an authorized test laboratory ensures that potential failures conform to what is expected of them. Media redundancy can be achieved through dual master systems.