DE10314721A1 - Secure data transmission over field bus for process automation technology involves encoding data in field device and transferring key over field bus to field device - Google Patents

Secure data transmission over field bus for process automation technology involves encoding data in field device and transferring key over field bus to field device Download PDF

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Publication number
DE10314721A1
DE10314721A1 DE10314721A DE10314721A DE10314721A1 DE 10314721 A1 DE10314721 A1 DE 10314721A1 DE 10314721 A DE10314721 A DE 10314721A DE 10314721 A DE10314721 A DE 10314721A DE 10314721 A1 DE10314721 A1 DE 10314721A1
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Germany
Prior art keywords
field device
field
fieldbus
field bus
data transmission
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
DE10314721A
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German (de)
Inventor
Markus Kilian
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Endress and Hauser SE and Co KG
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Endress and Hauser SE and Co KG
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Application filed by Endress and Hauser SE and Co KG filed Critical Endress and Hauser SE and Co KG
Priority to DE10314721A priority Critical patent/DE10314721A1/en
Priority to PCT/EP2004/003406 priority patent/WO2004114621A1/en
Publication of DE10314721A1 publication Critical patent/DE10314721A1/en
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
    • H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/20—Pc systems
    • G05B2219/25—Pc structure of the system
    • G05B2219/25205—Encrypt communication
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/31—From computer integrated manufacturing till monitoring
    • G05B2219/31131—Field device with gateway functions for communication with pc and other field devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/06—Network architectures or network communication protocols for network security for supporting key management in a packet data network
    • H04L63/062—Network architectures or network communication protocols for network security for supporting key management in a packet data network for key distribution, e.g. centrally by trusted party
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Hardware Design (AREA)
  • Computing Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Small-Scale Networks (AREA)
  • Computer And Data Communications (AREA)

Abstract

The secure data transmission method involves encoding the data in a field device (F1). The field bus (FB1) is connected via a gateway (G1) to the public communications network (KN). The field bus is configured in accordance with the Profibus, Foundation Field Bus or HART standard. The key is transferred over the field bus to the field device.

Description

Die Erfindung betrifft ein Verfahren zur sicheren Datenübertragung über einen Feldbus gemäß dem Oberbegriff des Anspruchs 1.The The invention relates to a method for secure data transmission via a Fieldbus according to the generic term of claim 1.

In der Prozessautomatisierungstechnik werden häufig Feldbusse zur Übertragung von Daten zwischen Feldgeräten und Steuereinheiten eingesetzt. Die Datenübertragung erfolgt nach den bekannten Standards (Profibus, FF bzw. HART). Bisher werden die Daten unverschlüsselt übertragen, d.h. sie können von jedermann, der Zugriff zum Feldbus hat, mitgelesen werden. Ebenso können Daten in unbefugter Weise an Feldgeräte übertragen werden um Einstellungen (z.B. Parameter) dieser Feldgeräte zu ändern.In Process automation technology often uses field buses for transmission of data between field devices and control units used. The data transmission takes place after the known standards (Profibus, FF or HART). So far the Transfer data unencrypted, i.e. you can read by anyone who has access to the fieldbus. As well can Data is transferred to field devices in an unauthorized manner by settings (e.g. parameters) of these field devices to change.

Aus Sicherheitsgründen sollte der Zugriff auf die Daten eines Feldbusses daher gesichert werden.Out security access to the data of a fieldbus should therefore be secured become.

Aufgabe der vorliegenden Erfindung ist es deshalb, ein Verfahren zur sicheren Datenübertragung über einen Feldbus der Prozessautomatisierungstechnik anzugeben, das zum einen eine sichere Datenübertragung erlaubt, und zum anderen einfach und kostengünstig einsetzbar ist.task The present invention is therefore a method for safe Data transmission over a Fieldbus of process automation technology to indicate, on the one hand secure data transmission allowed, and on the other hand is simple and inexpensive to use.

Gelöst wird diese Aufgabe durch das im Anspruch 1 angegebene Verfahren.Is solved this task by the method specified in claim 1.

Vorteilhafte Weiterentwicklungen der Erfindungen sind in den Unteransprüchen angegeben.advantageous Further developments of the inventions are specified in the subclaims.

Die wesentliche Idee der Erfindung besteht darin, Daten, die über einen Feldbus der Prozessautomatisierungstechnik übertragen werden, zu verschlüsseln.The The essential idea of the invention is to have data about a Fieldbus of process automation technology are transmitted to encrypt.

In vorteilhafter Weise erfolgt die Verschlüsselung im Feldgerät selbst d.h. direkt bei der Datenquelle.In The encryption is advantageously carried out in the field device itself i.e. directly at the data source.

Häufig sind Feldbusse nicht mehr abgeschlossene Systeme, sondern über Gateways mit anderen Kommunikationsnetzen verbunden. Dadurch können die Daten auch über zusätzliche, eventuell öffentliche Kommunikationsnetze übertragen werden.Are common Field buses are no longer closed systems, but via gateways connected to other communication networks. This allows the Data also about additional possibly public Communication networks are transmitted.

In vorteilhafter Weise kann im Gateway daher noch eine zusätzliche Verschlüsselung erfolgen.In An additional one can therefore advantageously be provided in the gateway encoding respectively.

Das erfindungsgemäße Verfahren ist für alle bekannten Feldbusse (z. B. Profibus, FF, HART, etc.) einsetzbar.The inventive method is for all known fieldbuses (e.g. Profibus, FF, HART, etc.) can be used.

Der zur Verschlüsselung notwendige Schlüssel kann entweder über den Feldbus selbst oder aber vor Ort über die Vor-Ort-Bedienung oder über die Service-Schnittstelle ins Feldgerät übertragen werden, sowie aufgrund einer Geräteeigenschaft (z.B. der Seriennummer oder eines eingegebenen Wertes) generiert werden.The for encryption necessary keys can either over the fieldbus itself or on-site via on-site operation or via the service interface transferred to the field device as well as due to a device property (e.g. the serial number or an entered value) become.

Der Schlüssel kann zur symmetrischen bzw. asymmetrischen Verschlüsselung der Daten dienen.The key can be used for symmetrical or asymmetrical encryption serve the data.

Nachfolgend ist die Erfindung anhand eines in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert.following the invention is explained in more detail with reference to an embodiment shown in the drawing.

In der einzigen Figur ist ein Feldgerät F1 über einen Feldbus FB1, ein öffentliches Kommunikationsnetz KN und einen weiteren Feldbus FB2 mit einem Leitsystem L1 verbunden. Dadurch dass die Verschlüsselung der Daten bereits im Feldgerät F1 erfolgt, ist ein unberechtigtes Abhören der Daten auch auf dieser Teilstrecke der gesamten Datenübertragungsstrecke nicht möglich, zusätzlich ist die sichere Datenübertragung nicht auf in externen Komponenten eventuell integrierte Mechanismen angewiesen.In the only figure is a field device F1 via a fieldbus FB1, a public one Communication network KN and another fieldbus FB2 with a control system L1 connected. Because the encryption of the data already in the field device F1 takes place, is an unauthorized eavesdropping on the data Section of the entire data transmission route not possible, additionally is secure data transmission not on mechanisms that may be integrated in external components reliant.

Der Feldbus FB1 ist über ein Gateway G1 mit einem öffentlichen Kommunikationsnetz KN verbunden. Die weitere Datenübertragung erfolgt über einen Gateway G2 und einen Feldbus FB2 zum Leitsystem L1. Im Gateway G1 kann eine zusätzliche Verschlüsselung der Daten stattfinden. Bei dem erfindungsgemäßen Verfahren ist die gesamte Datenübertragungsstrecke vom Feldbus F1 über das öffentliche Kommunikationsnetz KN sowie dem Feldbus FB2 verschlüsselt. In gleicher Weise kann die Datenübertragung vom Leitsystem L1 zum Feldgerät F1 hin in verschlüsselter bzw. signierter Form erfolgen.The Fieldbus FB1 is over a gateway G1 with a public one Communication network KN connected. The further data transmission takes place via a gateway G2 and a fieldbus FB2 to the control system L1. In the gateway G1 can be an additional encoding the data take place. In the method according to the invention, the entire Data transmission link from fieldbus F1 via the public communications network KN and the fieldbus FB2 encrypted. In the same way, the data transmission from the control system L1 to the field device F1 towards encrypted or signed form.

Um Daten im Feldgerät F1 verschlüsseln zu können, muss der Schlüssel in diesem abgespeichert werden. Eine Möglichkeit den Schlüssel zum Feldgerät F1 zu übertragen, ist vom Leitsystem L1 aus. Der Schlüssel kann aber auch direkt am Feldgerät z. B. über die Service-Schnittstelle bzw. die Vor-Ort-Bedienung eingegeben werden oder auf einem anderen Weg dorthin gelangen.Around Data in the field device Encrypt F1 to be able must be the key can be saved in this. One way the key to field device To transfer F1 is from the control system L1. The key can also be used directly on the field device z. B. about the service interface or on-site operation can be entered or on get there another way.

Bei der vorliegenden Erfindung werden die Daten die über einen Feldbus der Prozessautomatisierungstechnik übertragen werden verschlüsselt, um einen unbefugten Zugriff auf die Daten bzw. auf die an dem Feldbus angeschlossenen Feldgeräte zu verhindern.at In the present invention, the data are transmitted via a fieldbus in process automation technology are encrypted to unauthorized access to the data or to that on the fieldbus connected field devices to prevent.

Claims (8)

Verfahren zur sicheren Datenübertragung über einen Feldbus der Prozessautomatisierungstechnik, dadurch gekennzeichnet, dass die Daten verschlüsselt sind.Process for secure data transmission via a fieldbus in process automation technology, characterized in that the data is encrypted. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Verschlüsselung im Feldgerät z. B. F1 erfolgt.A method according to claim 1, characterized in that encryption in the field device z. B. F1 takes place. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Feldbus FB1 über ein Gateway G1 mit einem öffentlichen Kommunikationsnetz KN verbunden ist.Method according to one of the preceding claims, characterized characterized in that the fieldbus FB1 via a gateway G1 with a public communication network KN is connected. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Feldbus entsprechend dem Profibus, Foundation Fieldbus bzw. HART Standard ausgelegt ist.Method according to one of the preceding claims, characterized marked that the fieldbus according to the Profibus, Foundation Fieldbus or HART standard is designed. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Schlüssel über den Feldbus FB1 zum Feldgerät F1 übertragen wird.Method according to one of the preceding claims, characterized characterized that the key over the Fieldbus FB1 to the field device Transfer F1 becomes. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Schlüssel vor Ort ins Feldgerät z.B. F1 übertragen wird.Method according to one of the preceding claims, characterized marked that the key into the field device on site e.g. F1 is transmitted. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Schlüssel aufgrund einer Geräteeigenschaft im Feldgerät z.B. F1 generiert wird.Method according to one of the preceding claims, characterized marked that the key due to a device property in the field device e.g. F1 is generated. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Schlüssel zur symmetrischen bzw. asymmetrischen Verschlüsselung der über den Feldbus FB1 übertragenen Daten dient.Method according to one of the preceding claims, characterized marked that the key for the symmetrical or asymmetrical encryption of the over the Fieldbus FB1 transmitted Data serves.
DE10314721A 2003-03-31 2003-03-31 Secure data transmission over field bus for process automation technology involves encoding data in field device and transferring key over field bus to field device Ceased DE10314721A1 (en)

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Application Number Priority Date Filing Date Title
DE10314721A DE10314721A1 (en) 2003-03-31 2003-03-31 Secure data transmission over field bus for process automation technology involves encoding data in field device and transferring key over field bus to field device
PCT/EP2004/003406 WO2004114621A1 (en) 2003-03-31 2004-03-31 Method for the secure transmission of data via a field bus

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DE10314721A DE10314721A1 (en) 2003-03-31 2003-03-31 Secure data transmission over field bus for process automation technology involves encoding data in field device and transferring key over field bus to field device

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Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006003167B3 (en) * 2006-01-23 2007-08-23 Siemens Ag Real-time communication protecting method for e.g. automation system, involves producing and managing code in discrete device for protecting real-time communication that takes place by protecting unit in connection layer of reference model
WO2007143421A2 (en) * 2006-05-31 2007-12-13 Honeywell International Inc. Method for integrating a wireless network with wired field devices
WO2008012164A1 (en) * 2006-07-27 2008-01-31 Endress+Hauser Gmbh+Co.Kg Method for isolating special functionalities in field devices used in automation technology
DE202006015797U1 (en) * 2006-10-12 2008-02-14 Phoenix Contact Gmbh & Co. Kg Parameterization of an intelligent unit via power supply
US7675935B2 (en) 2006-05-31 2010-03-09 Honeywell International Inc. Apparatus and method for integrating wireless or other field devices in a process control system
US7876722B2 (en) 2006-05-31 2011-01-25 Honeywell International Inc. System and method for wireless communication between wired field devices and control system components
EP2320285A1 (en) 2009-11-06 2011-05-11 VEGA Grieshaber KG Data processing device for a field device
US7965664B2 (en) 2006-05-31 2011-06-21 Honeywell International Inc. Apparatus and method for integrating wireless field devices with a wired protocol in a process control system
US8266602B2 (en) 2006-05-31 2012-09-11 Honeywell International Inc. Apparatus and method for converting between device description languages in a process control system
US8498201B2 (en) 2010-08-26 2013-07-30 Honeywell International Inc. Apparatus and method for improving the reliability of industrial wireless networks that experience outages in backbone connectivity
US8719468B2 (en) * 2006-01-23 2014-05-06 Abb Ag Wireless fieldbus management
US8756412B2 (en) 2010-04-16 2014-06-17 Honeywell International Inc. Gateway supporting transparent redundancy in process control systems and other systems and related method
DE102012112108A1 (en) * 2012-12-11 2014-06-26 Devolo Ag Method for managing network-enabled device in power line communication network, involves managing network-enabled device over power supply line based on representative of device-referred data of network-enabled device
US8924498B2 (en) 2010-11-09 2014-12-30 Honeywell International Inc. Method and system for process control network migration
WO2014206451A1 (en) * 2013-06-25 2014-12-31 Siemens Aktiengesellschaft Method and device for secure transmission of signal data in a system
US9110838B2 (en) 2013-07-31 2015-08-18 Honeywell International Inc. Apparatus and method for synchronizing dynamic process data across redundant input/output modules
WO2015169347A1 (en) * 2014-05-06 2015-11-12 Vega Grieshaber Kg Method for encrypted data transfer in process automation technology
US9191843B2 (en) 2013-06-12 2015-11-17 Honeywell International Inc. Apparatus and method for measuring and reporting redundant wireless connectivity over time
US9239574B2 (en) 2011-06-30 2016-01-19 Honeywell International Inc. Apparatus for automating field device operations by capturing device method execution steps for later use and related method
EP3026511A1 (en) 2014-11-25 2016-06-01 Fabian Sacharowitz Remote encrypted controlled actuator for valves in pipelines and other critical infrastructure
US9609524B2 (en) 2014-05-30 2017-03-28 Honeywell International Inc. Apparatus and method for planning and validating a wireless network
US9612587B2 (en) 2014-02-11 2017-04-04 Honeywell International Inc. Mobile extension for industrial operator consoles
US9699022B2 (en) 2014-08-01 2017-07-04 Honeywell International Inc. System and method for controller redundancy and controller network redundancy with ethernet/IP I/O
US9720404B2 (en) 2014-05-05 2017-08-01 Honeywell International Inc. Gateway offering logical model mapped to independent underlying networks
US10042330B2 (en) 2014-05-07 2018-08-07 Honeywell International Inc. Redundant process controllers for segregated supervisory and industrial control networks
US10148485B2 (en) 2014-09-03 2018-12-04 Honeywell International Inc. Apparatus and method for on-process migration of industrial control and automation system across disparate network types
US10162827B2 (en) 2015-04-08 2018-12-25 Honeywell International Inc. Method and system for distributed control system (DCS) process data cloning and migration through secured file system
US10296482B2 (en) 2017-03-07 2019-05-21 Honeywell International Inc. System and method for flexible connection of redundant input-output modules or other devices
US10409270B2 (en) 2015-04-09 2019-09-10 Honeywell International Inc. Methods for on-process migration from one type of process control device to different type of process control device
US10536526B2 (en) 2014-06-25 2020-01-14 Honeywell International Inc. Apparatus and method for virtualizing a connection to a node in an industrial control and automation system

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Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006003167B3 (en) * 2006-01-23 2007-08-23 Siemens Ag Real-time communication protecting method for e.g. automation system, involves producing and managing code in discrete device for protecting real-time communication that takes place by protecting unit in connection layer of reference model
US8719468B2 (en) * 2006-01-23 2014-05-06 Abb Ag Wireless fieldbus management
US8266602B2 (en) 2006-05-31 2012-09-11 Honeywell International Inc. Apparatus and method for converting between device description languages in a process control system
WO2007143421A2 (en) * 2006-05-31 2007-12-13 Honeywell International Inc. Method for integrating a wireless network with wired field devices
WO2007143421A3 (en) * 2006-05-31 2008-02-07 Honeywell Int Inc Method for integrating a wireless network with wired field devices
US7675935B2 (en) 2006-05-31 2010-03-09 Honeywell International Inc. Apparatus and method for integrating wireless or other field devices in a process control system
US7876722B2 (en) 2006-05-31 2011-01-25 Honeywell International Inc. System and method for wireless communication between wired field devices and control system components
US7889747B2 (en) 2006-05-31 2011-02-15 Honeywell International Inc. Apparatus, system, and method for integrating a wireless network with wired field devices in a process control system
US7965664B2 (en) 2006-05-31 2011-06-21 Honeywell International Inc. Apparatus and method for integrating wireless field devices with a wired protocol in a process control system
WO2008012164A1 (en) * 2006-07-27 2008-01-31 Endress+Hauser Gmbh+Co.Kg Method for isolating special functionalities in field devices used in automation technology
DE202006015797U1 (en) * 2006-10-12 2008-02-14 Phoenix Contact Gmbh & Co. Kg Parameterization of an intelligent unit via power supply
EP2320285A1 (en) 2009-11-06 2011-05-11 VEGA Grieshaber KG Data processing device for a field device
US8756412B2 (en) 2010-04-16 2014-06-17 Honeywell International Inc. Gateway supporting transparent redundancy in process control systems and other systems and related method
US8498201B2 (en) 2010-08-26 2013-07-30 Honeywell International Inc. Apparatus and method for improving the reliability of industrial wireless networks that experience outages in backbone connectivity
US8924498B2 (en) 2010-11-09 2014-12-30 Honeywell International Inc. Method and system for process control network migration
US9239574B2 (en) 2011-06-30 2016-01-19 Honeywell International Inc. Apparatus for automating field device operations by capturing device method execution steps for later use and related method
DE102012112108A1 (en) * 2012-12-11 2014-06-26 Devolo Ag Method for managing network-enabled device in power line communication network, involves managing network-enabled device over power supply line based on representative of device-referred data of network-enabled device
US9191843B2 (en) 2013-06-12 2015-11-17 Honeywell International Inc. Apparatus and method for measuring and reporting redundant wireless connectivity over time
WO2014206451A1 (en) * 2013-06-25 2014-12-31 Siemens Aktiengesellschaft Method and device for secure transmission of signal data in a system
US9110838B2 (en) 2013-07-31 2015-08-18 Honeywell International Inc. Apparatus and method for synchronizing dynamic process data across redundant input/output modules
US9448952B2 (en) 2013-07-31 2016-09-20 Honeywell International Inc. Apparatus and method for synchronizing dynamic process data across redundant input/output modules
US9612587B2 (en) 2014-02-11 2017-04-04 Honeywell International Inc. Mobile extension for industrial operator consoles
US9720404B2 (en) 2014-05-05 2017-08-01 Honeywell International Inc. Gateway offering logical model mapped to independent underlying networks
WO2015169347A1 (en) * 2014-05-06 2015-11-12 Vega Grieshaber Kg Method for encrypted data transfer in process automation technology
US10042330B2 (en) 2014-05-07 2018-08-07 Honeywell International Inc. Redundant process controllers for segregated supervisory and industrial control networks
US9609524B2 (en) 2014-05-30 2017-03-28 Honeywell International Inc. Apparatus and method for planning and validating a wireless network
US10536526B2 (en) 2014-06-25 2020-01-14 Honeywell International Inc. Apparatus and method for virtualizing a connection to a node in an industrial control and automation system
US9699022B2 (en) 2014-08-01 2017-07-04 Honeywell International Inc. System and method for controller redundancy and controller network redundancy with ethernet/IP I/O
US10148485B2 (en) 2014-09-03 2018-12-04 Honeywell International Inc. Apparatus and method for on-process migration of industrial control and automation system across disparate network types
EP3026511A1 (en) 2014-11-25 2016-06-01 Fabian Sacharowitz Remote encrypted controlled actuator for valves in pipelines and other critical infrastructure
US10162827B2 (en) 2015-04-08 2018-12-25 Honeywell International Inc. Method and system for distributed control system (DCS) process data cloning and migration through secured file system
US10409270B2 (en) 2015-04-09 2019-09-10 Honeywell International Inc. Methods for on-process migration from one type of process control device to different type of process control device
US10296482B2 (en) 2017-03-07 2019-05-21 Honeywell International Inc. System and method for flexible connection of redundant input-output modules or other devices

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