FIELD DEVICE AND METHOD OF OPERATION THEREOF
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Accused Products
Abstract
A field device, in particular a protective device for protecting, controlling or monitoring an electric switching or energy supply unit, has an access control device, controlling access to the field device. The access control device includes: a memory with access rights, roles and users stored therein, wherein each access right defines the access to at least one device value, one device parameter or one device function, one or more access rights are associated with each role, and one or more roles are associated with each user, and a control device suitable to prevent an access to a device value, a device parameter or a device function by a user when the respective user is not associated with a role with the access right required for the respective access. The control device has a test module that exclusively allows access by a user only if the access right that is required for the respective access and that is stored in the memory is provided with a valid electronic signature.
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Citations
30 Claims
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1-13. -13. (canceled)
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14. A field device for protecting, controlling or monitoring an electrical switchgear or power supply unit, comprising:
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an access control device for controlling access to the field device, said access control device including; a memory having stored therein access rights, roles, and users, each access right respectively defining access to at least one device value, a device parameter, or a device function, each role respectively having one or more associated access rights, and each user respectively having one or more associated roles; and a control device configured to prevent access to a device value, a device parameter or a device function by a user if the respective user has no associated role with the access right required for the respective access; said control device having a checking module permitting access by a user exclusively if the access right which is required for the respective access and which is stored in said memory is provided with a valid electronic signature. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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22. A method for operating a field device for protecting, controlling or monitoring an electrical switchgear or power supply unit, the method which comprises:
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controlling access to the field device by way of access rights, roles, and users stored in a memory, wherein; each access right respectively defines access to at least one device value, a device parameter, or a device function; each role respectively has one or more associated access rights; and each user respectively has one or more associated roles; and preventing access to a device value, a device parameter, or a device function by a user if the respective user has no associated role with the access right that is required for the respective access; and permitting access by a user exclusively if the access right that is required for the respective access and that is stored in the memory is provided with a valid electronic signature. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30)
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Specification