DNP3 Tutorial Part 1: An Introduction to DNP3

What is DNP3? DNP3 is a communications protocol used in SCADA and remote monitoring systems. It is widely used because it is an open protocol, meaning any manufacturer can develop DNP3 equipment that is compatible with other DNP3 equipment.

Feel free to download the tutorial, or contact us for expedited monitoring.

Since its introduction in 1993 as an immediately deployable solution for monitoring critical infrastructure status and allowing reliable remote control, Distributed Network Protocol (DNP or DNP3) has achieved widespread acceptance. GE-Harris Canada (formerly Westronic, Inc.) is generally credited with the seminal work on the protocol, but it is now implemented by an extensive range of manufacturers in a variety of industrial applications.

DNP3 is based on an object model that greatly reduces the bit mapping of data that is traditionally required by other less object oriented protocols. It also reduces the wide disparity of status monitoring and control paradigms generally found in protocols that provide virtually no pre-defined objects. Purists of these alternate protocols would insist that any required object can be 'built' from existing objects. Having some pre-defined objects though, makes DNP3 a somewhat more comfortable design and deployment framework for SCADA engineers and technicians.

DNP3 uses a Master/Remote Model

DNP3 used in a master/remote architecture

A typical DNP3 master/remote monitoring system architecture.

DNP3 is typically used between centrally located masters and distributed remotes. The master provides the interface between the human network manager and the monitoring system. The remote provides the interface between the master and the physical device(s) being monitored and/or controlled. The master and remote both use a library of common objects to exchange information. The DNP3 protocol contains carefully designed capabilities that enable it to be used reliably even over media that may be subject to noisy interference.

Learn More

DPS is here to help.


Have a specific question? Ask our team of expert engineers and get a specific answer!

Ask an Expert DPS Telecom Get a Fast Answer!

Click here for more information.

Get the DNP3 White Paper

Download our free DNP3 tutorial.

An introduction to DNP3 from your own perspective.

Download DNP3 White Paper Download White Paper

Click here for more information.

Having trouble finding the perfect solution?

Get Help

No other network on the planet is exactly like yours. We manufacture hundreds of product variations per year that are customized to our clients' exact spec, all while providing training, tech support, and upgrade availability.

Send us a quick online message about what you're trying to accomplish. We'll give you a call and work with you to design a perfect-fit solution for your network.

Hours: Monday - Friday
7:00 a.m. - 6:00 p.m. PST
Tech Support: (559) 454-1600 / support@dpstele.com
Sales: Domestic: (800) 693-0351
International: 1+ (559) 454-1600