公开(公告)号：US11927950B2

公开(公告)日：2024-03-12

申请号：US17515265

申请日：2021-10-29

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Nicholas L. Stay ,  Anthony G. Gibart ,  Mark A. Flood ,  Chandresh R. Chaudhari ,  Chad J. Bohl ,  Sivaram Balasubramanian

IPC: G06F11/00 ,  G05B19/418 ,  G05B23/02

CPC classification number: G05B23/0291 ,  G05B19/41835 ,  G05B19/41845 ,  G05B19/41855

Abstract: A system for communicating between redundant devices balances the desired attributes of a high availability (HA) control system and a safety control system. The system includes concurrent connections as a fault tolerant mechanism for industrial protocol connections at the transport layer. The concurrent connections establish multiple paths for redundancy from a data producer to a data consumer. Concurrent connections increase availability of the HA control and safety instrumented systems. More specifically, concurrent connections and architectural redundancies eliminate a single point of failure within the control system and further reduce safety connection timeouts during fault detection and/or recovery. Concurrent connections may be used to keep a HA system operational or to provide detection of a failure in a safety system. The industrial control network may be configured to function as a HA control system, as a safety control system, or with certain degrees of both HA and safety-related operation.

公开(公告)号：US10585412B2

公开(公告)日：2020-03-10

申请号：US15430932

申请日：2017-02-13

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Joseph P. Izzo ,  Nicholas L. Stay

IPC: G06F12/00 ,  G05B19/042

Abstract: Hardware memory management units are used in an integrated safety/non-safety industrial computer to allow shared memory architecture processors to implement safety and non-safety reduced risk of memory corruption. Testing of the memory management unit of the non-safety processor may provide a periodic writing to protected memory to invoke a protection fault providing a report to the safety processor.

公开(公告)号：US20180231949A1

公开(公告)日：2018-08-16

申请号：US15430932

申请日：2017-02-13

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Joseph P. Izzo ,  Nicholas L. Stay

IPC: G05B19/042

CPC classification number: G05B19/0428 ,  G05B2219/24008 ,  G05B2219/36546

Abstract: Hardware memory management units are used in an integrated safety/non-safety industrial computer to allow shared memory architecture processors to implement safety and non-safety reduced risk of memory corruption. Testing of the memory management unit of the non-safety processor may provide a periodic writing to protected memory to invoke a protection fault providing a report to the safety processor.