---
title: "system.dnp3"
---

# system.dnp3

> The following functions give you access to interact with the DNP3 devices.

## DNP3 Functions

### Functions by Scope

## Constants

* system.dnp3.NUL = 0
* system.dnp3.PULSE_ON = 1
* system.dnp3.PULSE_OFF = 2
* system.dnp3.LATCH_ON = 3
* system.dnp3.LATCH_OFF = 4
* system.dnp3.CLOSE = 1
* system.dnp3.TRIP = 2