System for remotely accessing an industrial control system over

Details System for remotely accessing an industrial control system over System for remotely accessing an industrial control system over

1998-10-16

2000-05-09

Gordon, Paul P.

Data processing: generic control systems or specific application

Generic control system, apparatus or process

Having operator control interface

700 9, 700 67, G05B 902

Patent

active

060616032

ABSTRACT:
A control system allows a user to access a programmable logic controller (PLC). system over a communication network such as an Internet network using a web browser. The system includes an Internet web interface between the network and the programmable logic controller. The Web interface serves Web pages from an Ethernet interface on a PLC and includes an HTTP protocol interpreter and a TCP/IP stack. The Web interface provides access to the PLC by a user at a remote location through the Internet. The interface translates the industry standard Ethernet, TCP/IP and HTTP protocols used on the Internet into data recognizable to the PLC. Using this interface, the user can retrieve all pertinent data regarding the operation of the programmable logic controller system.

REFERENCES:
patent: 5151896 (1992-09-01), Bowman et al.
patent: 5251302 (1993-10-01), Weigl et al.
patent: 5699350 (1997-12-01), Kraslavsky
patent: 5734831 (1998-03-01), Sanders
patent: 5805442 (1998-09-01), Crater et al.

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