Chapter 6 Configuration Of Dnp3 Outstation Parameters Using Commreq; Overview - Emerson PACSystems RX3i User Manual

User Manual
GFK-2911E
Chapter 6 Configuration of DNP3 Outstation
This chapter describes the configuration parameters used to set up the DNP3 Outstation
aspects of the EDS001 module. The COMMREQ used to convey the parameters from the
user's application program to the EDS001 is typically found in a structured text (ST)
programming block in ladder logic. This chapter contains segments of ladder logic to
illustrate how various parameters are passed to the EDS001 module, and what the user's
options are. The values supplied throughout the chapter are examples and may not relate
to the way you wish your DNP3 Outstation to be configured. Ladder logic examples may be
found on the support web-site
Controls/support.
Look for developer document DD301 and DD316 for original ETM001 related collateral and
EDS001 related collateral respectively.
mComreq_Setup[xx] appears throughout this chapter.
mComreq_Setup[] is an array containing the parameter data the user wishes to move to the
DNP3 Outstation module via the COMMREQ instruction.
[xx] is the index into that array.
6.1

Overview

The EDS001 module is set up as a DNP3 Outstation using an ST block which is executed once
in a standard ladder logic program. The purpose of the ST block is to configure the EDS001
module with the parameters required for the user's application.
A typical user application might be trying to set up the DNP3 Outstation as follows:
Table 4: Sample DNP3 Outstation Requirement
Sample User Requirement
COMMREQ Status Word
Outstation Status Space
DI (16 objects)
DO (16 objects)
AI (4 objects)
AO (4 objects)
CROB bit (8 objects)
Analog output value (4 objects)
Configuration of DNP3 outstation Parameters
Parameters Using COMMREQ
https://www.emerson.com/Industrial-Automation-
RX3i CPU Memory Assignment
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