GE X3.28 User Manual
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GE Energy Services
Allen-Bradley ANSI X3.28 DCA
Configuration Guide
Document Number : A197-0CG
Version : 1.00
Revision : 2
Date : 03.01.23
Classification: Restricted Full
GE Energy Services
NOTICE OF COPYRIGHT & PROPRIETARY RIGHTS
© 2003, General Electric Canada Inc. All rights reserved.
The contents of this manual are the property of General Electric Canada Inc. No part of this work
may be reproduced or transmitted in any form or by any means, except as permitted in written
license agreement with General Electric Canada Inc. The information contained in this document
is subject to change without notice.
Any attached hardware schematics and technical descriptions, or software listings that disclose
source code, are for information purposes only. Reproduction in whole or in part to create working
hardware or software for other than General Electric Canada Inc. products is strictly prohibited,
except as permitted by written license agreement with General Electric Canada Inc.
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TRADEMARK NOTICES
GE and g are trademarks and service marks of General Electric Company.
WESDAC is a registered trademark of General Electric Company, General Electric Canada Inc. All
other brand and product names mentioned in this document are trademarks or registered
trademarks of their respective companies.
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Table of Contents
About this Guide
GE Energy Services
About this Guide .......................................................................................................................vii
Who should use this Guide .......................................................................................................vii
Additional Documentation .......................................................................................................viii
Overview
Product Perspective.................................................................................................................... ix
Chapter 1: Configuring Tables
1.1 ANSI X3.28 DCA Configuration Tables ........................................................................ 1
1.2 Configuration Sequence ..................................................................................................2
Chapter 2: Configuring the Main Application Table (A197MAIN)
Chapter 3: Configuring the Communication Port Table (A197_COM)
Chapter 4: Configuring the SRU Table (A197_SRU)
Chapter 5: Configuring the Partition Definition Table (A197_PAR)
Chapter 6: Configuring System Parameters Table (A197_SYS)
Chapter 7: Configuring the Virtual Connection Table (A197_VC)
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Chapter 8: Configuring WIN for the ANSI X3.28 DCA
8.1 WESDAC Point Allocation........................................................................................... 17
Appendix A: Messages Logged by the ANSI X3.28 DCA
A.1 Fatal Error Messages..................................................................................................... 20
A.2 Non-Fatal Error Messages............................................................................................. 25
A.3 Warning Messages ........................................................................................................ 28
A.4 Information Messages ................................................................................................... 28
A.5 Control Request Return Codes...................................................................................... 29
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List of Figures
Figure 1 System Overview............................................................................................................. x
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List of Tables
Table 1 ANSI X3.28 DCA Configuration Tables ..........................................................................1
Table 2 Main Application Configuration Table Parameters .......................................................... 3
Table 3 Port Configuration Table Parameters................................................................................ 5
Table 4 Character Times ................................................................................................................. 7
Table 5 SRU Configuration Table Parameters............................................................................... 9
Table 6 Partition Definition Table Parameters.............................................................................. 11
Table 7 Coupler for Allen-Bradley Data Highway Event Buffer Monitoring Values. ................ 12
Table 8 System Parameters Table Parameters ..............................................................................13
Table 9 Coupler for Allen-Bradley Data Highway System Parameters........................................ 14
Table 10 Virtual Connection Configuration Table Parameters.................................................... 16
Table 11 WESDAC Point Types................................................................................................... 23
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About this Guide
This guide describes how to configure the Allen-Bradley ANSI X3.28 Data Collection
Application (ANSI X3.28 DCA).
About this Guide
This document describes the purpose and use of each of the configuration parameters of the
ANSI X3.28 DCA. This document makes no attempt to explain how the configuration process
operates; it is limited to describing the format and content of the DCA configuration only.
Who should use this Guide
This document is intended for use by individuals responsible for the configuration of the ANSI
X3.28 DCA in GE Energy Services RTUs. These people should be familiar with the operation
and maintenance of RTUs in general, but may not be familiar with the GE Energy Services
family of products.
Before reading this document, you should have a basic understanding of the GE Energy Services
hardware environment, the configuration system, and the ANSI X3.28 DCA.
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Additional Documentation
The following supporting texts are available:
• Allen-Bradley ANSI X3.28 DCA Functional Specification (A197-0FS)
• WESMAINT II Maintenance Facility Configuration Guide (B014-0CG)
• WESMAINT II+ Configuration Guide (B014-1CG)
• WIN User's Configuration Guide for the WESDAC D20 (B008-0CG)
• WIN User's Configuration Guide for the CCU (B008-1CG)
• Config Pro Configuration System User’s Guide (P012-0UG)
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Overview
The ANSI X3.28 DCA software is installed in GE Energy Services WESDAC equipment to
provide an interface to Sub-Remote Units (SRUs) using the ANSI X3.28 communication
protocol.
Product Perspective
The ANSI X3.28 DCA software is custom software installed in the GE Energy Services Remote
Terminal Unit (RTU) to act as a data concentrator for one or more SRUs using the ANSI X3.28
communication protocol. After the system is installed, the RTU has the ability to function as a
sub-master within a Supervisory Control and Data Acquisition (SCADA) system, which controls
multiple SRUs. Figure 1 represents a complete system overview of how the ANSI X3.28 DCA
interfaces with the WESDAC Interface Node (WIN) in a typical GE Energy Services RTU.
The application is designed to communicate with SRUs via the ANSI X3.28 protocol. The ANSI
X3.28 DCA receives data from the SRUs by polling for data in a master-slave relationship, or
through unsolicited messages.
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Chapter 1: Configuring Tables
The ANSI X3.28 DCA configuration contains all of the data structures necessary to configure a
RTU to poll devices using the ANSI X3.28 protocol.
1.1 ANSI X3.28 DCA Configuration Tables
The purpose of each configuration table is described below.
Table Name Description
A197MAIN The Main Application configuration table is used to define global settings for the entire ANSI
X3.28 DCA application. These parameters pertain to all channels and SRUs connected within the
system.
A197_COM The Communication Port Configuration table contains data related to the communication port set-
up for each communication port used by the ANSI X3.28 DCA.
A197_SRU The SRU configuration table contains data required to perform polling and control operation on
the connected SRUs.
A197_PAR The Partition Definition table contains data required to define the different digital input and analog
input partitions in the system.
A197_SYS The System Parameters configuration table allows the user to define the parameters used to
configure the connected SRUs.
A197_VC The Virtual Connection table is used to configure the behavior of the virtual connection channels.
Table 1 ANSI X3.28 DCA Configuration Tables
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1.2 Configuration Sequence
The following is a list of the steps required to configure the ANSI X3.28 DCA:
1. Edit the ANSI X3.28 DCA configuration. Prepare it according to the guidelines in this
document and the specific use for which the ANSI X3.28 DCA is required.
2. Edit the configuration for the other applications that will run on the product. Prepare them
according to their own configuration guides.
3. Generate the configuration and download it to the product using a GE Energy Services
Configuration System. The list of applications to be compiled must include the ANSI X3.28
DCA, application A197-0.
4. Restart the product. If the ANSI X3.28 DCA encounters an error during its initialization, it
will log a message to the WESMAINT Error Log and then, depending on the severity of the
error, terminate or continue with its run-time function.
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5. Check for error messages. Log into the WESMAINT maintenance interface, select the
System Functions item from the Main Menu, and then select the Error Log item from the
System Functions Menu. If any error messages are displayed, correct the problem as
described in Appendix A: Messages Logged by the ANSI X3.28 DCA, and repeat steps 3
through 5.
When the ANSI X3.28 DCA has successfully validated all the configuration parameters,
configuration is complete.
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