g
GE Energy Services
ANSI X3.28/SRIO DPA
CONFIGURATION GUIDE
Document Number : A071-0CG
Version : 2.02
Revision : 2
Date : 02.07.08
Classification: Restricted Full
GE Energy Services
NOTICE OF COPYRIGHT & PROPRIETARY RIGHTS
© 2002, 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.
TRADEMARK NOTICES
ANSI X3.28/SRIO DPA
CONFIGURATION GUIDE
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.
and/or GE Power Systems Energy Control Systems 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
Purpose of this Guide .................................................................................................................ix
Who Should Use this Guide.......................................................................................................ix
Additional Documentation .......................................................................................................... x
Overview
Product Perspective.................................................................................................................... xi
Chapter 1: Configuring Tables
1.1 ANSI X3.28/SRIO DPA Configuration Tables .............................................................. 1
1.2 Configuration Sequence .................................................................................................. 2
Chapter 2: Configuring the Main Table (A071MAIN)
Chapter 3: Configuring the Mapping Tables
Chapter 4: Configuring WESMAINT for the ANSI X3.28/SRIO DPA
4.1 Log-In User (B014USER)............................................................................................... 9
Appendix A: Error Messages
A.1 Error Messages.............................................................................................................. 11
4.2 Fatal Error Messages..................................................................................................... 11
Glossary of Terms
List of Acronyms and Abbreviations
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List of Figures
Figure 1 System Overview...........................................................................................................xii
Figure 2 Read Access Flags ......................................................................................................... 10
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List of Tables
Table 1 ANSI X3.28/SRIO DPA Configuration Tables ................................................................ 1
Table 2 Character Times ................................................................................................................ 3
Table 3 Character Times ................................................................................................................ 6
Table 4 Mapping Table Configuration Parameters ........................................................................ 8
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About this Guide
This guide describes, in detail, how to configure the ANSI X3.28/SRIO Data Processing
Application (DPA).
Purpose of this Guide
This document describes the purpose and use of each of the configuration parameters of the
ANSI X3.28/SRIO DPA. This document makes no attempt to explain how the configuration
process operates, it is limited to describing the format and content of the DPA configuration
only.
To configure the data mapping the user must also allow for the SPABUS Data Collection
Application (DCA) to be configured in conjunction with this application. Refer to the SPABUS
Configuration Guide listed in the Additional Documentation for more information on
configuring the SPABUS DCA.
Who Should Use this Guide
This document is intended for use by individuals responsible for the configuration of the ANSI
X3.28/SRIO DPA 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 WESDAC hardware
environment, the configuration system, the ANSI X3.28/SRIO DPA, and the SPABUS DCA.
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Additional Documentation
If you require more detail than this document provides, the following supporting texts are
available:
• ANSI X3.28/SRIO DPA Functional Specification (A071-0FS.WES)
• SPABUS DCA Functional Specification (A070-0FS.WES)
• SPABUS DCA Configuration Guide (A070-0FS.WES)
• WESMAINT II Maintenance Facility Configuration Guide (B014-0CG.700)
• WESMAINT II+ Configuration Guide (B014-1CG.CCU)
• WIN User's Configuration Guide for the WESDAC D20 (B008-0CG.D20)
• WIN User's Configuration Guide for the CCU (B008-1CG.CCU)
• Config Pro Configuration System User’s Guide (P012-0UG)
ANSI X3.28/SRIO DPA
CONFIGURATION GUIDE
• WESDAC Configuration System User's Guide (P005-0UG)
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Overview
The ANSI X3.28/SRIO DPA software is installed in GE Energy Services WESDAC equipment
to provide an interface to master stations using the ANSI X3.28 communication protocol.
Product Perspective
The ANSI X3.28/SRIO DPA software is custom software that will be installed in the GE Energy
Services RTU to provide a communication link to master stations using the ANSI X3.28
communication protocol. The ANSI X3.28/SRIO DPA does not follow typical GE Energy
Services DPA conventions, and interfaces directly to the SPABUS DCA.
The SPABUS DCA provides the only interface between the ANSI X3.2/SRIO DPA and WIN,
and must be present in the system in order to use the ANSI X3.28/SRIO DPA. The DPA does not
have access to the system WESDAC data tables, but only to data owned by the SPABUS DCA.
The ANSI X3.28/SRIO DPA configuration tables reference the SPABUS configuration item
table rather than the WESDAC tables. Figure 1 represents a complete system overview of how
the DPA interfaces with the SPABUS DCA in a typical GE Energy Services RTU.
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ANSI X3.28/SRIO DPA
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Master
Control
System
D20
Peripherals
Master
Command
Master
Response
Command
D20
Response
D20
Master
DPA
WIN
Command
WIN
Response
WIN
Event
Command
D20
DCA
DCA
Event
Response
Command
Response
WESDAC
Interface
Node
DCA
DCA
WIN
WIN
WIN
Event
DCA
Event
DCA
Response
WESMAINT
II
DCA
Command
SPABUS
DCA
Operator
Request
Display
Data
SPABUS
Response
SPABUS
Command
WESMAINT
Display
SPA
System
Project: G:\APPL\A070\R100\DOC\EASYCASE\
Chart: D20 data flow (FS)
Filename: d20_flow.dfd
Last modified on: Nov-03-1992
by User: andy
Figure 1 System Overview
SPABUS
Reply
ANSI X3.28
DPA
SPABUS
Request
ANSI
Command
ANSI
Response
Substation
Control
System
(SCS)
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Chapter 1: Configuring Tables
The ANSI X3.28/SRIO DPA configuration contains all of the data structures necessary to
configure a RTU to communicate with an ANSI X3.28 master station.
1.1 ANSI X3.28/SRIO DPA Configuration Tables
The purpose of each configuration table is in Table 1.
TABLE NAME DESCRIPTION
A071MAIN This table configures each communication port in the system and the database table addressing
associated with it. The database table mapping allows the user to configure the default locations
for the data partitions.
A071DIMP This table defines the digital input items, which are to be reported back to the host station.
A071DOMP This table defines the digital output items, which are to be reported back to the host station.
A071EVMP This table defines the event items, which are to be reported back to the host station.
A071AIMP This table defines the analog input items, which are to be reported back to the host station.
A071AOMP This table defines the analog output items, which are to be reported back to the host station.
Table 1 ANSI X3.28/SRIO DPA Configuration Tables
☞
☞ NOTE: The map tables are directly based on the SPABUS DCA. Points are
☞☞
mapped into the ANSI X3.28 DPA based on the ITEM table created in the
SPABUS configuration. The user must cross-reference the SPABUS
ITEM table to ensure compatible data is mapped.
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1.2 Configuration Sequence
The following is a list of the steps required to configure the ANSI X3.28/SRIO DPA:
1. Edit the configuration for the other applications that will run on the product. Prepare them
according to their own configuration guides. The SPABUS DCA must be configured before
the ANSI X3.28/SRIO DPA.
2. Edit the ANSI X3.28/SRIO DPA configuration. Prepare it according to the guidelines in this
document and the specific use for which the ANSI X3.28/SRIO DPA is required.
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/SRIO DPA, application A071, and the SPABUS DCA, application A070.
4. Restart the product. If the ANSI X3.28/SRIO DPA 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.
ANSI X3.28/SRIO DPA
CONFIGURATION GUIDE
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 B: ERROR MESSAGES, and repeat steps 3 through 5.
When the ANSI X3.28/SRIO DPA has successfully validated all the configuration parameters,
configuration is complete.
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Chapter 2: Configuring the Main Table
(A071MAIN)
The main configuration table, A071MAIN, defines the RTU topography including the physical
communication channel parameters, host and RTU station addresses, retry counts, and ANSI
table partition addressing.
Table 2 Character Times
NAME RANGE DESCRIPTION
Port Any valid com port
(hardware dependant)
Baud Rate 9600 (96)
4800 (48)
2400 (24)
1200 (12)
600 (6)
300 (3)
Parity Even (E)
Odd (O)
None (N)
Modem Enabled? Yes (Y)
No (N)
Checksum BCC (B)
CRC (C)
Embedded Rsp Yes (Y)
No (N)
A character string to hold the direct communication channel
name. For example, for the D20 valid communication ports are
"COM1" through "COM7".
This parameter indicates the baud rate to use. This must be set
to the baud rate used by the master station.
A typical baud rate is 9600.
Parity type to use. This must be set to the parity used by the
master station.
A typical setting is Even.
Modem enabled flag.
Checksum format to use on message. This must be set to the
checksum type used by the master station.
A typical setting is BCC.
Embedded response enable flag. This must be set to match the
master station capabilities.
A typical setting is Yes.
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NAME RANGE DESCRIPTION
Receive Squelch 00 .. 2147483647 Receiver squelch time in milliseconds.
A typical Receive Squelch is 00.
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Pre-Transmit
Delay
Post-Transmit
Delay
CTS Timeout 00 .. 2147483647 Clear to Send (CTS) transmit timeout period in milliseconds.
ENQ Count 00 .. 32767 Default number of Enquiries (ENQs) to be retransmitted.
NAK Count 00 .. 32767 Default number of Negative Acknowledgements (NAKs) to be
ACK Timeout 00 .. 32767 Time duration to wait for an Acknowledgement (ACK) from the
Master Address 00 .. 254 The address of the host (source) station with which this DPA is
RTU Address 00 .. 254 The destination address this RTU is to respond as (0 through
Valid Status -128 .. 127 4 Entries indicating acceptable Status return values from the
00 .. 2147483647 Pre-transmission RTS on time in milliseconds.
A typical Pre-Transmit Delay is 15.
00 .. 2147483647 Post-transmission RTS off time in milliseconds. This must be at
least 2 character times for reliable communication. A typical
Post-Transmit Delay is 3 character times. Refer to Table 3 for
character times at various baud rates.
A typical CTS Timeout is 10.
A typical value is 3.
retransmitted.
A typical value is 3.
host station (1/38 sec).
A typical value is 38 (1 second).
communicating. Address 255 is reserved as a broadcast address.
255). Address 255 is reserved as a broadcast address.
host. These status values apply only to events issued by the
master, and not the status of the message.
These values are typically set to 00.
Event Buffer Size 1 .. 32000 Size of the ANSI event buffer.
A typical value is 1000.
Spontaneous
Timeout
DI Retries -1 .. 255 Number of digital event data retries before discarding event
AI Retries -1 .. 255 Number of analog event data retries before discarding event
EV Retries -1 .. 255 Number of EV event data retries before discarding event
SPA Event Retries -1 .. 255 Number of SPA events retries before discarding event
4
00 .. 32767 Spontaneous event timeout (in milliseconds) before a failure is
logged.
A typical value is 5000.
(-1 try forever).
A typical value is 3.
(-1 try forever).
A typical value is 3.
(-1 try forever).
A typical value is 3.
(-1 try forever).
A typical value is 3.
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NAME RANGE DESCRIPTION
Power-Up Delay 00 .. 65535 Delay (in seconds) after start-up before the ANSI X3.28/SRIO
DPA will begin responding to requests.
A typical value is 10.
DI Offset 00 .. DO Offset Offset (in words) to the start of the digital input table partition
within the ANSI table.
Normal setting is 00.
DO Offset 00 .. EV Offset Offset (in words) to the start of the digital output partition
within the ANSI table.
Normal setting is 500.
EV Offset 00 .. AI Offset Offset (in words) to the start of the event storage partition
within the ANSI table.
Normal setting is 750.
AI Offset 00 .. AO Offset Offset (in words) to the start of the analog input partition within
the ANSI table.
Normal setting is 1000.
AO Offset 00 .. PD Offset Offset (in words) to the start of the analog output partition
within the ANSI table.
Normal setting is 1500.
GE Energy Services
PD Offset 00 .. TM Offset Offset (in words) to the start of the parameter data partition
within the ANSI table.
Normal setting is 2000.
TM Offset 00 .. EVNT Offset Offset (in words) to the start of the time partition within the
ANSI table.
Normal setting is 2300.
EVNT Offset 00 .. DD Offset Offset (in words) to the start of the event partition within the
ANSI table.
Normal setting is 2400.
DD Offset 00 .. Sys Offset Offset (in words) to the start of the diagnostic data partition
within the ANSI table.
Normal setting is 2500.
SYS Offset 00 .. Obj Offset Offset (in words) to the start of the system partition within the
ANSI table.
Normal setting is 3000.
OBJ Offset 00 .. 27000 Offset (in words) to the start of the object partition within the
ANSI table.
Normal setting is 5000.
Spontaneous
Event Enable
Spontaneous Data
Enable
No (00)
Yes (non-zero)
No (00)
Yes (non-zero)
Indicates whether or not spontaneous events are to be reported
to the host.
A typical value is Yes.
Indicates whether of not spontaneous data is to be reported to
the host.
A typical value is Yes.
Store
Configuration
Analog Format 32 Bit Binary (32) Format required by the host station for returned analogs.
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No (00)
Yes (non-zero)
Indicates whether or not the configuration should be stored.
A typical value is No.
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NAME RANGE DESCRIPTION
6 Digit BCD (6)
3 Digit BCD (3)
Analog Scale -32768 .. 32767 Returned to the master, but NOT USED !
A typical value is 32 Bit Binary.
Default setting is 1000.
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Timed Poll
Interval
☞
☞ NOTE: The sequence of the data partitions listed above may not be altered, but the sizes
☞☞
-32768 .. 32767 Returned to the master to complete system partition, but NOT
USED by the ANSI software.
Default setting is 30.
and start addresses may be changed at configuration time. For a complete detailed
description of each data partition, refer to the ANSI X3.28/SRIO Functional
Specification listed in the Additional Documentation section.
Baud Rate One Character Time (ms)
300 34
600 17
1200 9
2400 5
4800 3
9600 2
Table 3 Character Times
☞
☞ NOTE: All character times in Table 3 are based on a 10-bit character, and are
☞☞
rounded up to the nearest millisecond.
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Chapter 3: Configuring the Mapping
Tables
The ANSI X3.28/SRIO DPA mapping tables specify the data to be placed in the corresponding
data partition. This data will be returned to the master station in response to a read command for
those partitions. Not all data partitions require a data-mapping table.
The ANSI X3.28/SRIO DPA contains the following mapping tables:
• Digital Input Map Table, A071DIMP
• Digital Output Map Table, A071DOMP
• Event Data Map Table, A071EVMP
• Analog Input Map Table, A071AIMP
• Analog Output Map Table, A071AOMP
Each of the mapping tables contains the same configuration parameter, and are configured in the
same way.
☞
☞ NOTE: The SPABUS DCA Item Table, A070ITEM, must be configured before
☞☞
the ANSI X3.28/SRIO DPA mapping tables can be configured.
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Name Range Description
Item Table Offset 00 .. 65535 This parameter specifies a one-based offset into the SPABUS
Item Table, A070ITEM, for the data item to be returned to the
master.
00 indicates a spare point.
☞
☞ NOTE: It is the user's responsibility to ensure the
☞☞
SPABUS data item being mapped contains
the correct data type for this mapping table.
Table 4 Mapping Table Configuration Parameters
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Chapter 4: Configuring WESMAINT for
the ANSI X3.28/SRIO DPA
This chapter describes how to configure the WESMAINT application to allow ANSI
X3.28/SRIO DPA user's access to the ANSI X3.28/SRIO DPA custom WESMAINT screens.
4.1 Log-In User (B014USER)
B014USER contains WESMAINT application access information for individual users. The
B014USER table is part of the WESMAINT configuration, B014, and is mentioned here for
completeness only. It is not part of the ANSI X3.28/SRIO DPA configuration, but must be
configured if any of the desired options are required for the ANSI X3.28/SRIO DPA custom
WESMAINT menus.
The application control parameters in B014USER are used to provide users access to the ANSI
X3.28/SRIO DPA custom WESMAINT screens. The first application control parameter is the
application number. For control of the ANSI X3.28/SRIO DPA it must always be 71. The second
parameter is the modify access flag and the third is the read- access flag. A description of the
read flags used by the ANSI X3.28/SRIO DPA is shown in Figure 2. All unmarked bits are
unused, and should be set to zero. The ANSI X3.28/SRIO DPA does not use any of the modify
access flags.
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23 161718192022 2131 242526272830 29
15 8910111214 13
70123465
Always 1
Figure 2 Read Access Flags
For more information on configuring the WESMAINT application refer to the appropriate
WESMAINT configuration guide listed in the Additional Documentation section at the
beginning of this guide.
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Appendix A:Error Messages
This section contains a description of all error messages posted to the WESMAINT Error Log by
the ANSI X3.28/SRIO DPA
A.1 Error Messages
Messages logged to the WESMAINT Error Log by the DPA will be pre-pended with a process
name. This name will be one of the following:
• A071:
• E071:
• L071:
• R071:
• T071:
4.2 Fatal Error Messages
Fatal error messages indicate the application is suspending due to either an invalid critical
configuration parameter, or a critical process initialization sequence failed.
ANSI Application process died
Cause:
• During regular operation one of the standard operating processes has suspended.
Remedy:
• Contact the Customer Service Department to report this error.
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Can't allocate rx sinks
Cause:
• Not enough RAM available for the receive buffer queue to be created.
Remedy:
• Reduce the amount of memory used by this or other applications in the system.
• Upgrade to a larger memory model.
Can't create required exchanges. Suspending
Cause:
• The system cannot create the external interface inter-process message exchange.
Remedy:
• Contact the Customer Service Department to report this error.
Can't create T071 exchange
Cause:
• The system cannot create the external interface inter-process message exchange.
Remedy:
• Contact the Customer Service Department to report this error.
Can't get enough memory for ANSI Application. Suspending
Cause:
• The system cannot retrieve enough ram for operation of the ANSI DPA.
Remedy:
• Reduce the amount of memory used by this or other applications in the system.
• Upgrade to a larger memory model.
Can't allocate memory for event queue. Suspending !
Cause:
• The system cannot retrieve enough ram for operation of the ANSI DPA.
Remedy:
• Reduce the amount of memory used by this or other applications in the system.
• Upgrade to a larger memory model.
Can't open communications port
Cause:
• The system has found that this port is invalid, or already in use by another process.
Remedy:
• Ensure the Port configured in A071MAIN contains a valid port name.
• Ensure the Port configured in A071MAIN is not in use by another application.
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Can't set communications timers
Cause:
• The system was unable to configure the port timers.
Remedy:
• Contact the Customer Service Department to report this error.
Can't set configured bit rate
Cause:
• The system was unable to initialize the port using the configured baud rate.
Remedy:
• Refer to the chapter entitled Configuring the Main Table (A071MAIN) and ensure the
configured baud rate is valid.
Can't spawn/activate E071 process
Cause:
• The system cannot create the Event handler process.
Remedy:
• Contact the Customer Service Department to report this error.
Can't spawn/activate L071 process
Cause:
• The system cannot create the LRU process.
Remedy:
• Contact the Customer Service Department to report this error.
Can't spawn R071 process
Cause:
• The system cannot create the Receiver process.
Remedy:
• Contact the Customer Service Department to report this error.
Can't spawn T071 process
Cause:
• The system cannot create the Transmitter process.
Remedy:
• Contact the Customer Service Department to report this error.
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Invalid ACK time-out
Cause:
• The configured ACK Timeout is invalid.
Remedy:
• Ensure the configured ACK Timeout in A071MAIN is a positive value.
Invalid AI offset configured
Cause:
• The configured analog input offset is invalid.
Remedy:
• Ensure the configured AI Offset in A071MAIN is a positive value.
• Ensure the configured AI Offset is less than the AO Offset.
Invalid Analog Format configured 32 (BIN), 6 or 3 (BCD)
Cause:
• The configured Analog Formats is invalid.
ANSI X3.28/SRIO DPA
Remedy:
• Ensure the configured Analog Format in A071MAIN is either 32 Bit Binary (32), 6 Digit
BCD (6), or 3 Digit BCD (3).
Invalid AO offset configured
Cause:
• The configured analog output offset is invalid.
Remedy:
• Ensure the configured AO Offset in A071MAIN is a positive value.
• Ensure the configured AO Offset is less than the PD Offset.
Invalid checksum configured (B)cc or (C)rc
Cause:
• The configured checksum type is invalid.
Remedy:
• Ensure the configured Checksum in A071MAIN is either BCC (B) or CRC (C).
Invalid COMX configuration
Cause:
• The configured port name is invalid.
Remedy:
• Ensure the configured Port in A071MAIN is in the range "COM1" to "COM7".
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Invalid DD offset configured
Cause:
• The configured direct data offset is invalid.
Remedy:
• Ensure the configured DD Offset in A071MAIN is a positive value.
• Ensure the configured DD Offset is less than the Sys Offset.
Invalid destination number
Cause:
• The configured RTU address is invalid.
Remedy:
• Ensure the configured RTU Address in A071MAIN is not the broadcast address (255).
Invalid DI offset configured
Cause:
• The configured digital input offset is invalid.
Remedy:
• Ensure the configured DI Offset in A071MAIN is a positive value.
• Ensure the configured DI Offset is less than the DO Offset.
Invalid DO offset configured
Cause:
• The configured digital output offset is invalid.
Remedy:
• Ensure the configured DO Offset in A071MAIN is a positive value.
• Ensure the configured DO Offset is less than the EV Offset.
Invalid embedded response enable (Y)es or (N)o
Cause:
• The configured embedded response enable parameter is invalid.
Remedy:
• Ensure the configured Embedded Rsp in A071MAIN is either Yes (Y) or No (N).
Invalid event timeout configured
Cause:
• The configured spontaneous event timeout is invalid.
Remedy:
• Ensure the configured Spontaneous Event Timeout in A071MAIN is a positive value.
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Invalid EVNT offset configured
Cause:
• The configured event partition offset is invalid.
Remedy:
• Ensure the configured EVNT Offset in A071MAIN is a positive value.
• Ensure the configured EVNT Offset is less than the DD Offset.
Invalid EV offset configured
Cause:
• The configured event storage partition offset is invalid.
Remedy:
• Ensure the configured EV Offset in A071MAIN is a positive value.
• Ensure the configured EV Offset is less than the AI Offset.
Invalid modem enable (Y)es or (N)o
Cause:
• The configured modem enable parameter is invalid.
ANSI X3.28/SRIO DPA
Remedy:
• Ensure the configured Modem Enabled parameter in A071MAIN is either Yes (Y) or No (N).
Invalid Number of ENQS
Cause:
• The configured number of ENQs to be re-transmitted is invalid.
Remedy:
• Ensure the configured ENQ Count in A071MAIN is a positive number.
Invalid Number of NAKS
Cause:
• The configured number of ENQs to be re-transmitted is invalid.
Remedy:
• Ensure the configured ENQ Count in A071MAIN is a positive number.
Invalid OBJ offset configured
Cause:
• The configured object partition offset is invalid.
Remedy:
• Ensure the configured Obj Offset in A071MAIN is a positive value.
• Ensure the configured Obj Offset is less than 27000.
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Invalid parity configured (N)one, (E)ven, (O)dd
Cause:
• The configured parity is invalid.
Remedy:
• Ensure the configured Parity in A071MAIN is either None (N), Even (E), or Odd (O).
Invalid PD offset configured
Cause:
• The configured parameter data partition offset is invalid.
Remedy:
• Ensure the configured PD Offset in A071MAIN is a positive value.
• Ensure the configured PD Offset is less than the TM Offset.
Invalid Retransmit analog configured -1 to 255
Cause:
• The number of analog event data retries configured is invalid.
Remedy:
• Ensure the number of AI Retries configured in A071MAIN is in the range -1 through 255. (1 indicates try forever.)
Invalid Retransmit digital configured -1 to 255
Cause:
• The number of digital event data retries configured is invalid.
Remedy:
• Ensure the number of DI Retries configured in A071MAIN is in the range -1 through 255. (1 indicates try forever.)
Invalid Retransmit ev data configured -1 to 255
Cause:
• The number of EV event data retries configured is invalid.
Remedy:
• Ensure the number of EV Retries configured in A071MAIN is in the range -1 through 255. (1 indicates try forever.)
Invalid Re-transmit event configured -1 to 255
Cause:
• The number of SPA event data retries configured is invalid.
Remedy:
• Ensure the number of SPA Event Retries configured in A071MAIN is in the range -1 through
255. (-1 indicates try forever.)
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CONFIGURATION GUIDE
Invalid source number
Cause:
• The configured master station address is invalid.
Remedy:
• Ensure the configured Master Address in A071MAIN is not the broadcast address (255).
Invalid SYS offset configured
Cause:
• The configured system partition offset is invalid.
Remedy:
• Ensure the configured Sys Offset in A071MAIN is a positive value.
• Ensure the configured Sys Offset is less than the Obj Offset.
Invalid TM offset configured
Cause:
• The configured time partition offset is invalid.
Remedy:
• Ensure the configured TM Offset in A071MAIN is a positive value.
• Ensure the configured TM Offset is less than the EVNT Offset.
Mapped AI point not Found. Check config
Cause:
• One of the mapped analog input points could not be located in the SPABUS configuration.
Remedy:
• Ensure none of the Item Table Offsets in A071AIMP are greater than the number of records
in the SPABUS item configuration table, A070ITEM.
• Ensure all of the Item Table Offsets in A071AIMP refer only to records in the SPABUS item
configuration table, A070ITEM, of type AI, PI, or Spare (-1).
Mapped AO point not Found. Check config
Cause:
• One of the mapped analog output points could not be located in the SPABUS configuration.
Remedy:
• Ensure none of the Item Table Offsets in A071AOMP are greater than the number of records
in the SPABUS item configuration table, A070ITEM.
• Ensure all of the Item Table Offsets in A071AOMP refer only to records in the SPABUS
item configuration table, A070ITEM, of type AO or Spare (-1).
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Mapped DI point not Found. Check config
Cause:
• One of the mapped digital input points could not be located in the SPABUS configuration.
Remedy:
• Ensure none of the Item Table Offsets in A071DIMP are greater than the number of records
in the SPABUS item configuration table, A070ITEM.
• Ensure all of the Item Table Offsets in A071DIMP refer only to records in the SPABUS item
configuration table, A070ITEM, of type DI, PD, or Spare (-1).
Mapped DO point not Found. Check config
Cause:
• One of the mapped digital output points could not be located in the SPABUS configuration.
Remedy:
• Ensure none of the Item Table Offsets in A071DOMP are greater than the number of records
in the SPABUS item configuration table, A070ITEM.
• Ensure all of the Item Table Offsets in A071DOMP refer only to records in the SPABUS
item configuration table, A070ITEM, of type DO or Spare (1-).
Mapped EV point not Found. Check config
Cause:
• One of the mapped event data points could not be located in the SPABUS configuration.
Remedy:
• Ensure none of the Item Table Offsets in A071EVMP are greater than the number of records
in the SPABUS item configuration table, A070ITEM.
• Ensure all of the Item Table Offsets in A071EVMP refer only to records in the SPABUS
item configuration table, A070ITEM, of type EV or Spare (-1).
Missing Configuration ... Deleting
Cause:
• The system was unable to locate the main configuration table for the ANSI X3.28/SRIO
DPA.
Remedy:
• Ensure the main configuration table, A071MAIN, exists in the configuration and is
comprised of a single record.
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CONFIGURATION GUIDE
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Glossary of Terms
application A piece of software (a program) consisting of one or more
processes and supporting functions.
ASCII American Standard Code for Information Interchange. A
seven-bit code that standardizes a set of characters
representing letters and numbers for international use.
baud rate A measurement of the speed of a communications line; the
number of times a line can change state in one second; the
rate at which a signal is modulated.
binary A number system having only two symbols (1 and 0), and
where values are expressed in the base two number
system.
bit Abbreviation of binary digit. The smallest unit of
information in a binary system. Has a value of either one
(1) or zero (0).
char The name of a data-type in the C programming language.
Stands for character, or a group of eight bits that function
as a single unit.
cyclic redundancy check An error-detection scheme that checks the integrity of a
transmitted message for errors introduced during
transmission. Abbreviated as CRC.
data-collection
application
data-processing
application
host The client or host station/computer, with which the RTU
logical remote unit An RTU that exists in software, but not physically. LRUs
A software application that acquires data from and sends
data to various intelligent electronic devices. Abbreviated
as DCA.
A software application that requests and processes data as
it is required by (usually) a master station. Abbreviated as
DPA.
equipment communicates. Also called a master or master
station.
are created by software partitioning of a single physical
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master The client or host station or computer, with which the
port An interface point connecting a communications channel
random-access memory A type of temporary data storage (memory) that can be
remote terminal unit A piece of equipment located at a distance from a master
source code A piece of code that has not yet been compiled or
WESDAC Configuration
System
WESDAC Interface
Node
ANSI X3.28/SRIO DPA
CONFIGURATION GUIDE
RTU so that it appears to the master station as two or more
RTUs. This technique is usually employed as a means by
which to overcome the point-addressing limitations of a
particular protocol, or to form a logical grouping of data.
Abbreviated as LRU.
RTU equipment communicates. Also referred to as a host
or host computer.
and a device.
read and changed while the computer is in use. Data stored
in random-access memory is lost if the system loses
power. Abbreviated as RAM.
station to monitor and control the status of outlying
equipment, and to communicate the information back to
the master station or host. Abbreviated as RTU.
assembled (that is, it is still in the language it was
programmed in) and so cannot yet run on a machine.
A menu-oriented software program that operates on a
personal computer and allows you to download
configuration information to D20 RTUs or CPM RTUs.
A module of software that manages the transfer, storage,
and manipulation of data between data- collection
applications (DCA), data-processing applications (DPA)
and data-translation applications (DTA). Abbreviated as
WIN.
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List of Acronyms and Abbreviations
ACK acknowledgement
AI analog input
ANSI American National Standards Institute
AO analog output
ASCII American Standard Code for Information Interchange
BCC block check character
BCD binary coded decimal
CCU central control unit
CRC cyclic redundancy check
CTS clear to send
DCA data-collection application
DI digital input
DO digital output
DPA data-processing application
LRU logical remote unit
MAXRECS maximum number of records
NAKS negative acknowledgement
RAM random-access memory
RTS request to send
RTU remote terminal unit
WESDAC WESDAC Data Acquisition and Control
WESMAINT WESDAC Maintenance Facility
WIN WESDAC Interface Node
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