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Methods and apparatus for control using control devices that provide a virtual machine environment and that communicate via an IP network

  • US 6,788,980 B1
  • Filed: 06/09/2000
  • Issued: 09/07/2004
  • Est. Priority Date: 06/11/1999
  • Status: Expired due to Term
First Claim
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1. A control device for a control system, whereinthe control device provides a virtual machine environment and executes byte code therein, the byte code configuring the control device to execute a control algorithm that is embodied in the byte code, wherein the control algorithm at least one of (i) maintains the control system at a desired level, and (ii) drives it to that level, as a function of one or more measured values and one or more setpoints, and the control device comprises a web server that facilitates any of configuration, monitoring and maintenance of the control system or one or more other control devices.

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