scope:

This document specifies the DNP3 protocol structure, functions, and interoperable application options (subset levels). The specified subset level defines the functionality implemented in each device. The simplest level is intended for basic devices. More advanced levels support increasing functionality. The protocol is suitable for operation on a variety of communication media consistent with the makeup of most electric power communication systems.

Purpose

The purpose of this standard is to document and make available the specifications for the DNP3 protocol. While a primary focus of this protocol is the Electric Utility Industry, other industries that deliver Energy and Water are also using DNP3. The intent of this DNP3 standard is to meet the goal established by the National Institute of Standards and Technology (NIST) for a Smart Grid protocol:

- Provides a protocol standard from a recognized standard institution

- Provides interoperability with hundreds of operational systems and thousands of devices

- Provides cyber security based on IEC/TS 62351-5

- Provides Devices data profiles in a format that can be mapped to IEC 61850 Object Models

Vendors may use this standard to implement and test the protocol in their products and be assured of interoperability. Users may use the document to specify the features they wish to apply. System Integrators may use this standard to assist in system integration and testing.