---
title: "DNP Server | Introduction | N3uron KB V1.21"
slug: "dnp-server-introduction"
description: "DNP Server is a N3uron module designed to provide enhanced connectivity for all devices and third-party applications requiring DNP3 communications…"
updated: 2022-05-19T09:15:43Z
published: 2022-05-19T09:15:43Z
canonical: "docs.n3uron.com/dnp-server-introduction"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.n3uron.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Introduction

**DNP Server** is a **N3uron** module that provides enhanced connectivity for all devices and third-party applications requiring **DNP3** communications. It allows users to create and configure one or multiple **DNP3** **Slaves,** also known as **outstations,** to expose data acquired through any of the other **N3uron** modules, such as the **OPC UA Client**, **REST API Client**, **MQTT Client**, **Siemens**, etc. This module supports communications over TCP.

**Supported Object Types:**

| **Object Description** | **Object Type** | **Variations** |
| --- | --- | --- |
| Binary Inputs | 01 | 1 and 2 |
| Double-bit Inputs | 03 | 1 and 2 |
| Binary Outputs | 10 | 1 and 2 |
| Analog Inputs | 30 | 1, 2, 3, 4, 5 and 6 |
| Analog Outputs | 40 | 1, 2, 3 and 4 |

Dnp Server does not support the following features:

- DNP3 authentication.
- Unsolicited messaging.
- DNP3 over UDP transport

For more information about DNP3 protocol, please visit [dnp](https://www.dnp.org/).