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Safety-oriented control system

A safe and oriented technology, applied to a part of the system controller to control it, which can solve problems such as difficulty in guaranteeing

Active Publication Date: 2007-04-04
BECKHOFF AUTOMATION GMBH
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Problems solved by technology

Therefore, one of the goals when developing a safety program is to reduce the complexity of the safety program as much as possible, but in the ordinary closed safety program, this is difficult to ensure, because the purpose of the ordinary closed safety program is to communicate with the non-safety Related control functions are isolated from

Method used

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Embodiment Construction

[0023] Figure 1 is the basic structure of the automation system. The automation computer can be connected with the sensors and actuators through a point-to-point connection or a bus system to automatically output processing signals to the actuators using a control program based on the processing signals captured by the sensors. In addition to real-time capability, that is, the ability of the automation computer to output processed signals to the actuators within a specified processing time, another important requirement for the control program executed by the automation computer is to ensure that there is no harm to human beings when the automation system fails. harm to the environment. Therefore, in addition to performing normal control functions, the automation computer also performs a safety function, which ensures that when an important part of the automation system fails, the automation system automatically changes to a safe state according to the fail-safe principle. An...

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Abstract

According to the invention, in order to control safety functions in a system control arrangement that is not oriented to safety functions, in an automation system, safety modules are provided which have an error-free functionality and a safety protocol that carries out a data transmission in the form of safety messages, the input and output parameters of each safety module being encapsulated by the safety module and the individual safety modules being linked, from the point of view of data and procedure, via a data transmission path in line with the safety functions of the system that are to be controlled, the data being exchanged between the safety modules on the basis of the safety protocol.

Description

technical field [0001] The invention relates to a method and a device for controlling safety functions in an automation system as part of a non-safety function-oriented system controller. Background technique [0002] One of the basic requirements for automation computers used to control mechanical devices is safety and reliability. In particular, it must be ensured that the automation system does not pose a threat to people and the environment in the event of a malfunction. Therefore, usually automation systems work under the principle known as fail-safe, according to which the automation system transitions to a safe state in the event of a failure of an important component. The task of the automation computer when executing safety-related control functions based on the fail-safe principle is to process the processing signals in order to execute the control functions in current and error-free form and to always indicate the safe processing status to the actuators of the au...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/042G05B19/05
CPCG05B19/058G05B19/0428G05B2219/14114G05B2219/23234
Inventor H·伯特纳J·萨克斯
Owner BECKHOFF AUTOMATION GMBH
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