DNP3 (Distributed Network Protocol) is a set of communications protocols used between components in process automation systems. Its main use is in utilities. The data, examples and diagrams in this manual are included solely for the concept or product description and are not to be deemed as a statement of. IEEE STD. (DNP3) TUTORIAL. Date: May 17, – Sunday am –5: 30 pm. Event: IEEE Substations Committee Annual Meeting.

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In order to ensure interoperability, longevity and upgradeability of the protocol, the DNP3 Tjtorial Group has taken ownership of the protocol and assumes responsibility for its evolution.

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While IEC was still under development and had not been standardized, there was a need to create a standard that would allow interoperability between various vendors’ SCADA components for the electrical grid.

The protocol is robust, efficient, and compatible with a wide range of equipment, but has become cnp3 complex and subtle over time. Please log in or register to comment.

It provides multiplexing, data fragmentation, error checking, link control, prioritization, and layer 2 addressing services for user data. Ron Farquharson is a Principal Consultant and utility automation professional with expertise in a number of areas of electric utility transmission and distribution automation including data communications, substation gateways, synchrophasor data measurement, equipment condition monitoring and standards. DNP3 Distributed Network Protocol is a set of communications protocols used between components in process automation systems.

IEEE Std has been deprecated. The User Group also maintains a comprehensive website with wide range of resources for its members. This can result in significantly more responsive data retrieval than polling everything, all the time, irrespective of whether it has changed significantly. This standard was subsequently withdrawn March 27, Stay informed with our latest updates by following us on these platforms: His first experience with Campbell equipment came soon after graduating from college while working on a series of plant-growing experiments conducted on the International Space Station.

This feature of DNP3 allows historical and event-driven data to be transmitted while ensuring that no critical data is lost. This page was last edited on 5 Julyat By using this site, you agree to the Terms of Use and Privacy Policy.

Do you have DNP3 comments or questions? All articles with unsourced statements Articles with unsourced statements from January Stay informed with our latest updates by following us on these platforms:. The Remote Terminal Unit can also be configured to spontaneously report Class 1, 2, or 3 data, when it becomes available. It makes heavy use of cyclic redundancy check codes to detect errors. The development of DNP3 was a comprehensive effort to achieve open, standards-based Interoperability between substation computers, RTUs, IEDs Intelligent Electronic Devices and master stations except inter-master station communications for the electric utility industry.


It was developed for communications between various types of data acquisition and control equipment. In Novemberresponsibility for defining further DNP3 specifications and ownership of the DNP3 specifications was turned over to the DNP3 Users Group, a group composed of utilities and vendors who are utilizing the protocol. For example, floating point number variants are available, so there is no need to map the number on to a pair of 16 bit registers. Retrieved from ” https: Usage in other industries is not common.

DNP3 is an open and public protocol.

As part of these engagements, he has developed an effective methodology for roadmap development that includes technology assessments, standards maturity, gap analysis, regulatory compliance and risk assessments. Set up your preferences for receiving email notifications when new blog articles are posted that match your areas of interest. Weather stations based on Campbell Scientific data loggers are used worldwide because of their capability, flexibility, accuracy, and reliability.

Although the protocol was designed to be very reliable, it was not designed to be secure from attacks by hackers and other malevolent forces that could potentially wish to disrupt control systems to disable critical infrastructure. As real-time weather data and energy production have become more intertwined with the deployment of wind and solar farms, transferring critical weather data via SCADA protocols has become more and more commonplace. The C0 subcommittee now has 16 active working groups working on 17 different standards related to substation automation.

The DNP3 protocol has cnp3 substantial library of common point-oriented objects. The reading of the classes can all be performed together or each class can be read at a different rate, providing a mechanism to create different reporting priorities for the different classes.

The previous version of secure authentication in IEEE used pre-shared keys only. Is there a topic you would like to learn more about?

Also important was the time frame; the need for a solution dnpp3 meet today’s requirements.

In recent years Ron has also been assisting utilities with their technology investment and deployment planning. In addition to their flexibility in measuring sensors, our data loggers are also very flexible in how they transfer data, which includes communicating with SCADA systems via the DNP3 protocol.



More standards are planned and volunteers are warmly accepted at any level of experience. This includes conceptual design; cost justification; technology assessments; equipment specification, cnp3 and selection; system architecture for substation networks of all kinds; cyber security; detailed design including logic, drawing development, and programming; testing; tuforial commissioning.

Following this, the Master polls for the event data by reading Class 1, Class 2 or Class 3. DNP3 has been designed to be as close to compliant as possible to the standards as they existed at time of development with the addition of functionality not identified in Europe but needed for current and future North American applications e. These include tutoroal just encryption but other practices that enhance security against well known intrusion methods.

Some vendors support encryption via bump-in-the-wire for serial communications or virtual private networks for Internet Protocol-based communications. Tuyorial is DNP3 used? Share This Article Email. The new version is capable of using Public Key Infrastructureand it facilitates remote key changes.

The version of the standard includes features for Secure Authentication Version 5. Because smart grid applications generally assume access by third parties to the same physical networks and underlying IP infrastructure of the grid, much work has been done to add Secure Authentication features to the DNP3 protocol.

Getting to Know DNP3

The DNP Protocol has time stamped variants of all point data objects so that even with infrequent RTU polling, it is still possible to receive enough data to reconstruct a sequence of events of what happened in between the polls. The protocol is designed to allow reliable communications in the adverse environments that electric utility automation systems are subjected to, being specifically designed to overcome distortion induced by EMIaging components their expected lifetimes may dhp3 into decadesand poor transmission media.

He has expertise in substation automation at the transmission and distribution levels.

With RBE functionality, only a change in data is reported rather than reporting all data each time a device is polled.