What port does DNP3 use?

These TCP port numbers are derived from the base socket of the Digi device, which by default is 2000. [Note the default TCP port for DNP is 20000. Most DNP SCADA applications allow this to be changed when creating TCP socket connections.

What is DNP3 protocol?

DNP3, or DNP 3.0, is a communications protocol used in SCADA and remote monitoring systems. It is widely used because it is an open standard protocol. This means that any manufacturer can develop DNP3 equipment that is compatible with other DNP3 equipment.

Is DNP3 TCP IP?

DNP3 is a TCP/IP-based communication protocol. The DNP3 master acts as a TCP client connected to multiple TCP servers, so-called outstations. The master can access the outstation data, such as analog inputs, counters, and binary outputs, by sending read, control, and freeze requests.

Where can I find the DNP3 communication protocol manual?

DNP3 Communication Protocol Manual Relion®Protection and Control 670 series 2.0 ANSI DNP3 Communication Protocol Manual Document ID: 1MRK 511 301-UUS Issued: May 2014 Revision: – Product version: 2.0 © Copyright 2014 ABB. All rights reserved Copyright

How is DNP data sent to a port?

DNP data is sent to serial ports of a remote terminal server via a TCP Socket connection using the terminal server’s IP address; a TCP port number associated with the individual serial port is used to identify the data path (e.g. 192.168.10.5:2101).

How is DNP3 used in process automation systems?

DNP3 (Distributed Network Protocol) is a set of communications protocols used between components in process automation systems. Its main use is in utilities such as electric and water companies.

How does a DNP3 message get to the transport layer?

The DNP3 Master wants to know the current status of the Remote’s power and prepares a Read request message for the appropriate object. After passing through all three DNP3 layers, the message is passed to the TCP/UDP transport layer. The transport layer adds a data block that IDs the Master port from which the request is sent.