| 摘要 |
For increasing the safety monitoring of a plant with several functional units, such as a production plant, the invention provides a method, in which each functional unit is individually monitored or checked by its own safety device, in which the safety devices constantly inform one another on their monitoring state and in the case of a malfunction of at least one functional unit or safety device, at least one safety-relevant actuator is operated. For achieving this objective, an apparatus is so constructed that with each functional unit is associated its own safety device and that the safety devices are so interconnected that in the case of a malfunction of at least one functional unit or safety device, at least one safety-relevant actuator is operated.
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