A Forum for Supporters of the Distributed Network Protocol

The development of DNP3 was a comprehensive effort to achieve open, standards-based interoperability between substation outstations and master stations for the electric utility industry. Since its inception, DNP3 has also become widely utilized in adjacent industries such as water / waste water, transportation and the oil and gas industry.

In early 2010, the DNP Technical Committee began working with the IEEE to establish DNP3 as an IEEE standard; IEEE Standard for Electric Power Systems Communications – Distributed Network Protocol (DNP3) was released as IEEE Std 1815TM-2010 later that year. This standard incorporated all of the individual “Basic 8” volumes into one document, with each “Basic 8” volume becoming a separate Clause in the 1815-2010 document.

Since then, members of the DNP Technical Committee and IEEE Power & Energy Society, Transmission and Distribution (PE/T&D) Committee and Substations Committee (PE/Sub) – Working Group C12 have been working diligently to update various sections of the DNP3 specifications.  The result is IEEE Std 1815TM-2012, which was released Oct. 12, 2012.

The updated DNP3 standard contains many changes, including DNP3 Secure Authentication v5, which defines a protocol mechanism that enables a DNP3 outstation/master to unambiguously determine that it is communicating with the correct user/outstation.

IEEE Std 1815-2012 and the accompanying DNP3 Specification Supplement 1 - Device Profile Template and XML Schema are now available for download to DNP Users Group members from the DNP3 Document Library.


TB2014-001 1815-2012 Errata 
by Lorene Cunningham
 1/16/2014 5:58 PM
Members of the DNP Technical Committee have identified an error in the first Application Layer breakout figure of Appendix B of IEEE Std 1815-2012 (DNP3). The corrected figure is included in Technical Bulletin 2014-001, which also details previously-identified...
Updated DNP3 Device Profile 
by Lorene Cunningham
 12/31/2013 4:37 AM
The DNP Technical Committee has released an updated Device Profile, which can be downloaded from the DNP3 Downloads.
Updates to the Device Profile include:
- Addition of section 1.1.14 Conformance Testing (Master and Outstation): Specifies the version...
Validation of Incoming DNP3 Data 
by Lorene Cunningham
 12/20/2013 6:15 PM
The DNP Technical Committee has released an Application Note which details numerous checks that should be performed on received data, in order to verify that the data comprises a valid DNP3 message.
The Application Note AN2013-004 Validation of Incoming...
ICS-CERT Notifications regarding DNP3 Attachment
by Lorene Cunningham
 11/12/2013 7:18 PM

ICS-CERT has recently issued a number of advisories that report flaws in the DNP3 interface of various control system devices. The Board of Directors and Technical Committee have been monitoring and investigating these reports: Read their report.

DNP3 Secure Authentication Tutorial 
by Lorene Cunningham
 11/12/2013 7:18 PM
The DNP Technical Committee has released a guide for those wishing to implement or use DNP3 Secure Authentication.  AN2013-002 DNP3 Secure Authentication Tutorial can be downloaded from the dnp.org Document Library.
(More Announcements...)

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