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Industrial control system with Web enabled I/O modules

  • US 20020156868A1
  • Filed: 09/28/2001
  • Published: 10/24/2002
  • Est. Priority Date: 04/20/2001
  • Status: Active Grant
First Claim
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1. An I/O module for use with an industrial control system having a programmable logic controller for executing an industrial control program and communicating over a control-network with the I/O module, the I/O module comprising:

  • an I/O interface communicating electrical signals between the I/O interface and the industrial process;

    an Internet interface communicating electrical signals between the Internet interface and the Internet;

    a network interface communicating electrical signals between the network interface and the control-network; and

    a processing unit connected to the I/O interface, the Internet interface and the network interface and executing a stored program to pass data both between the Internet and the I/O interface and between the network interface and the I/O interface;

    whereby Internet control of the industrial process may be had through the I/O module without intervention of the programmable logic controller.

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