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Method of accessing functions of an embedded device

專利號(hào)
US10867077B2
公開(kāi)日期
2020-12-15
申請(qǐng)人
Schneider Electric Automation GmbH（DE Marktheidenfeld）
發(fā)明人
Ralf Berner; Thomas Gleixner
IPC分類
G06F21/76; G05B19/042; G05B19/05; G06F21/31; G06F21/60
技術(shù)領(lǐng)域
embedded,functional,level,access,device,in,can,firewall,key,management
地域： Marktheidenfeld

摘要

A method for accessing functions of an embedded device, for example a controller programmable from memory, wherein function blocks of the embedded device are assigned to at least two hierarchically superimposed levels, an access to a function block of the embedded device occurs from outside of the embedded device by a data interface, and for access an authentication must occur for the level to which the respective function block is assigned, and again for each individual level above the level to which the function block is assigned, to permit execution of a function of the function block, wherein the functions of the function blocks permit access to a firmware of the embedded device.

說(shuō)明書(shū)

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

In accordance with an advantageous embodiment, the embedded device is configured to execute a real-time application. The real-time capability of the embedded device is in particular necessary for the control of time-critical industrial processes to enable an interplay of different components in such industrial processes. The embedded device is therefore in particular not a “conventional” personal computer (PC).

A fieldbus connector is preferably provided at the embedded device and the embedded device is preferably operable at a voltage of 24 V. The embedded device can thus be easily integrated into the conventional infrastructure of automation processes. The fieldbus connector can e.g. in this respect be a connector for the CAN bus.

In another respect, the statements made with respect to the method in accordance with the invention apply to the embedded device in accordance with the invention.

The invention will be described in the following purely by way of example with reference to the drawings. There are shown:

FIG. 1 a schematic view of an embedded device having levels disposed hierarchically above one another and having associated functional blocks; and

FIG. 2 a schematic view of the firmware and software of an embedded device.

FIG. 1 schematically shows an embedded device, namely a programmable logic controller (PLC) 10. The PLC 10 comprise an Ethernet connector 12 that serves as a data interface for communication with e.g. a web browser of a computer (not shown).

權(quán)利要求

1
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