Programmable logic controller with programmable high-speed...

Details Programmable logic controller with programmable high-speed... Programmable logic controller with programmable high-speed...

2005-12-20

2005-12-20

Barlow, John (Department: 2863)

Data processing: measuring, calibrating, or testing

Measurement system

Performance or efficiency evaluation

C702S183000, C700S012000

Reexamination Certificate

active

06978227

ABSTRACT:
High-speed programmable logic controller (PLC) signal processing is accomplished using a programmable signal processing arrangement that is capable of altering characteristics of signal processing in response to one or more signal processing coefficients. According to an example embodiment of the present invention, a PLC-based arrangement includes a PLC controller and a signal processing arrangement that oversamples and processes a signal at a frequency that is greater than a maximum input-process-output scan rate of the PLC controller. In one implementation, the signal processing arrangement is programmable with complex high-speed signal processing parameters that can be downloaded, for example, via the Internet in response to an end-user request. With these approaches, signal sampling and processing is achieved with a PLC-based system at a rate that can be much higher than previously-available signal processing rates with PLC controllers.

REFERENCES:
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WO 2003/087960 International Search Report; mail date Aug. 17, 2004.
Dimitri, S.D.; “High Performance DSP Based Motion Control for PLC's with VME Architecture”;Industrial Computing Society and Instrument Society of America; Proceedings of the Industrial Computing Conference, vol. 1; pp. 215-237; Oct. 27, 1991.
Anonymous; “4-Channel Analog Converter Board”;Internet Article, ACC-28A-Delta Tau Data Systems, Inc.-CGDM, MM; XP-002291104, retreival date Aug. 3, 2004.
Anonymous; Digital Signal Processor Control Board DS200DSPCG_A_;Internet Article, GEI-100220, GE Motors&Industrial Systems; pp1-11; XP002291105, retrieval date Aug. 3, 2004.

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