Schneider Automation Gmbh

Schneider Electric Industries Sas

Steve Webster

Kenneth Lee

Vijay Vallala

Richard H Breinlinger

Vibha Shahi

Julien Duquesnay

Kenneth L Wester

A system, method, and software product are provided for updating parameters, such as requested packet intervals (RPIs), in a network. The system may include one or more PLCs, communication controllers, and I/O devices coupled in a communication network, such as EtherNet/IP. A request to change a parameter (e.g., scanning rate or timeout value) is transmitted from the PLC to an I/O device specifying a new parameter value or time-out value. The I/O device may receive the message, use a temporary time-out value while processing the message, and transmit an acknowledgement confirming the new value to the PLC. The I/O device may use the updated parameter and new time-out value. The updated parameter may be implemented without the need to take down and re-establish network connections to the affected devices.

Updating parameters in a network

Aspects of the invention provide apparatuses, systems, and computer readable media for supporting redundant network management. When the primary device () fails, its Ethernet IP address is transferred or controlled by a backup Ethernet device. System information is provided to a network adapter so that programmable logic controllers are in agreement about the mode of operation. A central processing unit () determines a calculated mode of operation from the operational statuses of the programmable logic controller and the mated programmable logic controller. The central processing unit provides an address indication () based on the calculated mode of operation and a selection indication () that is indicative of a selected address criterion. The corresponding network adapter determines the assigned network address from the selection indication and the address indication.

Management of redundant addresses in standby systems

A method and device for filtering an input signal received by an input module in order to produce a filtered input signal, wherein the received input signal is converted such that it has either a HIGH input state or a LOW input state each having a time duration characteristic of the input module, and the filtered input signal is represented by an ON filtered state and an OFF filtered state. The time duration of the HIGH input state and the LOW input state are determined by sampling the converted input signal at a certain sampling rate so as to allow the sampling results to be used by a filtering algorithm to set the filtered input state to ON or OFF based on a set of filter parameters which may vary from one input module to another. The filtering device is adapted to be configurable such that the filter parameters can be electronically selected so that the same filtering algorithm can be used for different input modules having different electrical characteristics.

Method and device for filtering input signals

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Raymond, NH, United States of America

Steve Webster