Principle of Redundancy

In order to control potential errors when recording and processing safe signals in bus subscribers, each function is processed by at least two different components or methods, which monitor each other. When an error is detected, these components or methods are used to bring about a safe condition. On the safe bus system SafetyBUS p, for example, the application software is processed by redundant microprocessors, which compare their respective results before transferring them to the redundant SafetyBUS p chip set. This then generates the actual safety-related message.

Redundant hardware, using SafetyBUS p as an example.