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Method and device for secure parameterization of electronic devices

A technology of electronic equipment and security parameters, applied in the direction of electrical digital data processing, error response safety measures, general control systems, etc., can solve problems such as confirmation errors, input errors, easy omissions and tampering, and achieve the effect of avoiding data tampering

Active Publication Date: 2007-12-12
KW SOFTWARE
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Problems solved by technology

[0003] However, especially since each electronic device, such as a drive or a safety controller, often has a very large number of safety parameters, there is also the risk that inadvertent tampering can be easily missed even in the case of such post-mortem checks, or the checks are not performed with the granularity required
In addition, it cannot be avoided with a high probability, for example, that input errors and / or confirmation errors occur due to inattention of the user and especially when parameterizing several safety electronic devices in succession

Method used

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  • Method and device for secure parameterization of electronic devices
  • Method and device for secure parameterization of electronic devices
  • Method and device for secure parameterization of electronic devices

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Embodiment Construction

[0033] Reference is first made below to FIGS. 1 and 2 , which respectively show the implementation of the safety function on an operator control device including an editor for parameterizing safety electronics according to IEC 61508 SIL 3 or EN 954-1 category 4 A simplified flow diagram of the safe module concept or prediction for safe modification of parameter values ​​caused by responding to user calls to edit functions.

[0034] In this case, the activation of the individual safety functions by the realized safety module takes place automatically in response to certain corresponding trigger conditions.

[0035] As shown in FIG. 1 , the illustrated safety functions used are divided into four mutually consecutive levels 100 , 200 , 300 , 400 .

[0036] A first safety function according to the invention, denoted by reference numeral 100, ensures safe input by deleting and recreating the editing display. Thus, by automatically deleting and re-establishing the editing display, ...

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Abstract

The invention relates to a method and device for secure parameterization, according to IEC 61508 SIL 1-3 or EN 954-1 category 1-4, of secure electronic devices. One aim of the invention is to indicate an approach which makes it possible to overcome explicit back-reading of the parameters from the secure device and confirmation of the respective parameters by the user. According to the invention, parameter values, which are provided for parametrization and which are selected or inputted by means of a user interface of an electronic operating device and which are subsequently transmitted to the electronic device, are kept in at least one memory which can be accessed by the operating device and can be read back from the memory at least once for verification of secure parameterization.

Description

technical field [0001] The invention relates to pairs such as in particular drives, SPS (storage programmable controllers) and embedded controllers according to IEC 61508 SIL 1 to 3 or EN 954-1 classes 1 to 4, i.e. mainly embedded or integrated in large systems A method and device for setting safety parameters, that is, configuring, a safety electronic device such as a computing unit in the invention. Background technique [0002] Currently, safety parameterization according to IEC 61508 SIL 3 or EN 954-1 category 4 is performed conventionally by entering the respective desired or necessary parameters in the program interface of a non-safety software tool on a PC or other corresponding operating device. The parameters and the checksum of the complete parameter set are then downloaded to the electronic device for the safety function via any communication channel. However, a disadvantage of this procedure is, inter alia, that the individual parameters and the checksum must th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F11/00G05B19/042
CPCG06F11/0796
Inventor 史蒂芬·施莱特
Owner KW SOFTWARE
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