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6.4 DNP3.0 Protocal Introduction
Structure Model
Figure 6-2 Each Layer of the relationship between the data unit
6.4.1 Overview
This document describes the DNP3.0 communications protocol employed
by Acuvim II Series Power Meter. This protocol can be selected for the serial
communication port which can consist of RS232/RS485. It is assumed that
the reader is familiar with the DNP3.0 protocol and serial communications
in general. This DNP3.0 is a reduced set of the Distributed Network Protocol
Version 3.00, and it gives enough functionality to get critical measurement from
the Acuvim II Series Power Meter. The DNP3.0 supports class0 object only. No
event generation is supported .This DNP3.0 is always act as a slave device.
User Data
User Laver
Application Layer
Transport Layer
Link Layer
Physical Layer
APDU
User Data
AH
APDUTH
TPDU
TPDU
LH
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