Real time-capable control system having an sps application under a non-real time-capable operating system
AssigneePhoenix Contact GmbH & Co. KG
InventorsClaus Vothknecht, Werner Pollmann
Life of this patent
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Abstract
The invention relates to a real time-capable control system essentially consisting of a software-implemented SPS application that exchanges the output data and input data by means of a field bus connecting module. The SPS application runs on a computer under the control of a non-real time-capable operating system, whereby the full functionality of the non-real-time-capable operating system is maintained. The real time capability makes the field bus connecting module ready for use, and the data are exchanged between the field bus connecting module and the SPS application via the host interface located inside the computer.
Claims19
A real-time capable control system comprising:
- a computer having a non-real-time capable operating system and configured to execute at least one PLC application under the control of the non-real-time capable operating system;
- a fieldbus interface module connected to a core of the computer via a host interface;
- a fieldbus operable to execute a fieldbus cycle;
- and
- at least one fieldbus module connected via the fieldbus,
- wherein the real-time capability of the control system is achieved by a fixed time-slot pattern corresponding to the execution of the fieldbus cycle, and
- wherein a timing for outputting output data of the PLC application and a timing for inputting input data of the PLC application are dependent on the fieldbus cycle and the fixed time-slot pattern.
Dependencies are inferred from the claim text.