Emerson PACSystems RX3i IEC 61850 User manual

USER MANUAL
GFK-2849A
Oct 2019
PACSystemsTM RX3i
IEC 61850 ETHERNET COMMUNICATION MODULE
USER MANUAL

User Manual Contents
GFK-2849A Oct 2019
Contents i
Contents
Chapter 1: Introduction ..........................................................1
1.1 Description.......................................................................................................... 2
1.2 Specifications ...................................................................................................... 4
1.3 Controls and Indicators........................................................................................ 5
1.3.1 Secure Digital (SD) Card Slot ..................................................................... 5
1.3.2 Switched {XE Switch} Ethernet {XE Ethernet} Ports {XE Ports} .................... 5
1.3.3 Port Status Indicators ................................................................................ 6
1.3.4 Small Form-factor Pluggable (SFP) Modules for Ethernet Ports .................. 6
1.3.5 Micro USB Port {XE Micro USB Port} ........................................................... 7
1.3.6 Restart Pushbutton {XE Restart Pushbutton} ............................................. 7
1.3.7 Indicator LEDs ........................................................................................... 7
1.4 IEC 61850 Networks for PACSystems ................................................................... 8
1.4.1 PAC Machine Edition Configuration and Programming .............................. 8
1.5 Basic System: One RX3i CPU and One ECM850 Using a Single Port ....................... 9
1.5.1 Basic System: One RX3i CPU and ECM850 Using Multiple Ports................ 10
1.5.2 Systems with One RX3i CPU and Two ECM850s ....................................... 11
1.5.3 One RX3i CPU with Four ECM850s on Separate Networks ........................ 12
1.5.4 Two RX3i CPUs, Two IEC 61850 Networks, and One Supervisory Network 12
1.6 Glossary ............................................................................................................ 13
Chapter 2: Installation ..........................................................15
2.1 Pre-Installation Check........................................................................................ 15
2.2 Installation Location .......................................................................................... 15
2.3 Installation in Hazardous Areas .......................................................................... 16
2.3.1 ATEX Zone 2............................................................................................ 16
2.3.2 ATEX Marking.......................................................................................... 16
2.4 Module Installation............................................................................................ 16
2.4.1 Removing the Backplane Knockout ......................................................... 17
2.4.2 Module Insertion ..................................................................................... 17
2.4.3 Module Removal ..................................................................................... 18
2.4.4 Hot Insertion and Removal ...................................................................... 18
2.4.5 Fault Notifications ................................................................................... 19
2.5 Confirm ECM850 Communication with the CPU ................................................ 19
2.6 Next Steps ......................................................................................................... 20

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Contents ii
2.7 Ethernet Port Connections................................................................................. 20
2.7.1 IEC 61850 Network Connections ............................................................. 21
2.7.2 RJ-45 Port Connections............................................................................ 21
2.7.3 Installing Small Form-factor Pluggable (SFP) Devices ............................... 21
2.7.4 Removing SFP Devices............................................................................. 22
2.8 Powerup Indicator LED Patterns......................................................................... 23
2.8.1 Detailed Indicator LED Descriptions......................................................... 23
2.9 Installing the USB Port Driver ............................................................................. 25
2.10 Firmware Updates ............................................................................................. 26
2.11 Time Synchronization with the RX3i CPU ........................................................... 26
Chapter 3: Configuration ......................................................27
3.1 Configuration Overview..................................................................................... 27
3.2 Configuration Tools ........................................................................................... 27
3.2.1 Non-Volatile Configuration Parameters ................................................... 28
3.3 Basic Configuration Steps .................................................................................. 28
3.3.1 Add one or more ECM850s ...................................................................... 28
3.3.2 Configure each ECM850 Parameters (Settings Tab) ................................. 29
3.3.3 Open IEC 61850 Configurator for each ECM850 ...................................... 31
3.3.4 Add IEDs to each ECM850........................................................................ 32
3.3.5 Configure each IED parameters ............................................................... 34
3.3.6 Read Variables of Each IED....................................................................... 36
3.3.7 Select Variables for Each IED.................................................................... 40
3.3.8 Validate Configuration of IEC 61850 Client for each ECM850 ................... 41
3.3.9 Generate PLC Protocol Variables (PPVs) for each ECM850........................ 43
3.3.10Validate configuration............................................................................. 43
3.3.11Download configuration.......................................................................... 43
3.4 Advanced Configuration for IEC 61850 Client .................................................... 44
3.4.1 Report Control Block (RCB) overview ....................................................... 44
3.4.2 Configuring URCBs .................................................................................. 45
3.4.3 Configuring BRCBs .................................................................................. 52
3.4.4 Configuring Originator Category for ECM850 .......................................... 58
3.5 Configuration Features for the ECM850 ............................................................. 59
3.5.1 Configuring Multiple Modules and Multiple Devices ................................ 59
3.5.2 Copy, Paste, and Movement of ECM850s Within a Target ........................ 60
3.5.3 Copy, Paste, and Movement of ECM850s Between Targets...................... 60

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Contents iii
3.5.4 Download and Upload of ECM850 Configuration to/from
the RX3i Controller.................................................................................. 60
3.6 IEC 61850 Configurator - Scenarios and Techniques .......................................... 61
3.6.1 Exporting complete configurations ......................................................... 61
3.6.2 Importing Configuration from a File ........................................................ 63
3.6.3 Configuration Scenarios for IEC 61850 Configurator ................................ 66
3.6.4 IEC 61850 Configurator Error Handling.................................................... 70
3.7 IEC 61850 Data Types and Attributes ................................................................. 71
3.7.1 Configuring the IED Connection State Variable ........................................ 71
3.7.2 Data Type Mapping –IEC 61850.............................................................. 73
3.7.3 Quality Type Mapping –IEC 61850 .......................................................... 74
3.7.4 Timestamp Type Mapping –IEC 61850.................................................... 74
Chapter 4: System Operation ................................................76
4.1 IEC 61850 System Overview .............................................................................. 77
4.1.1 IEC 61850 Communications .................................................................... 77
4.1.2 RX3i IEC 61850 Client System.................................................................. 77
4.2 ECM850 Operations in RX3i System................................................................... 78
4.2.1 Duplicate ECM850 IP Address detection .................................................. 79
4.2.2 Resolving Duplicate IP Addresses............................................................. 79
4.3 ECM850 I/O Scan Mechanism ............................................................................ 79
4.3.1 RX3i CPU Sweep...................................................................................... 80
4.3.2 RX3i Input Scan ....................................................................................... 80
4.3.3 RX3i Output Scan .................................................................................... 80
4.3.4 IEC 61850 Server Connections................................................................. 81
4.4 PPV Operations in RX3i Controller Applications.................................................. 81
4.4.1 PPV Description....................................................................................... 81
4.4.2 IEC 61850 Operation and PPV Mapping ................................................... 83
4.4.3 Read Operations ..................................................................................... 87
4.4.4 Write Operations..................................................................................... 87
4.4.5 Control Operations.................................................................................. 88
4.5 Performance Factors ......................................................................................... 94
4.6 RX3i CPU Operations for ECM850 ...................................................................... 94
4.6.1 SVC REQ for Enabling or Disabling Protocol Outputs................................ 94
4.6.2 Reset Smart Module for ECM850 ............................................................. 96
4.6.3 Unsupported Features............................................................................. 96
4.7 Network Time Synchronization.......................................................................... 96

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Contents iv
4.7.1 Configuring SNTP for ECM850 ................................................................. 96
4.7.2 SNTP Operation....................................................................................... 97
4.7.3 Multiple SNTP Servers in a Network ......................................................... 97
4.7.4 Loss or absence of SNTP Timing Signals ................................................... 97
4.8 Hot Standby (HSB) Operation for ECM850 ......................................................... 97
4.8.1 Basic HSB System Overview..................................................................... 97
4.8.2 Protocol Output Control for HSB system.................................................. 98
4.8.3 Enabling or Disabling Protocol Outputs ................................................... 99
4.8.4 Status Reporting for Protocol Outputs State............................................ 99
4.8.5 Application logic for handling HSB System............................................. 100
4.8.6 Non-Synchronized Active Unit (NSAU) Scenarios ................................... 100
4.8.7 HSB Configuration Using Machine Edition ............................................. 101
Chapter 5: Diagnostics........................................................ 102
5.1 Powerup and Reset.......................................................................................... 102
5.1.1 Module Restart...................................................................................... 102
5.1.2 Problems during Powerup and Reset ..................................................... 104
5.1.3 Transitioning to Firmware Update Mode ............................................... 104
5.2 Special LED Blink Patterns ................................................................................ 105
5.2.1 Special LED Patterns - Module Identification .......................................... 105
5.2.2 Special LED Patterns - Microprocessor Over temperature....................... 105
5.3 Status Reporting.............................................................................................. 106
5.3.1 IED Connection Status........................................................................... 107
5.4 Fatal Error Reporting ....................................................................................... 108
5.5 ECM850’s Local Log Table................................................................................ 108
5.5.1 Local Log Table-Only Faults ................................................................... 108
5.5.2 Viewing and Clearing the Local Log Table .............................................. 110
5.6 ECM850 Faults in the RX3i Fault Tables ............................................................ 112
5.6.1 Clearing the RX3i Fault Tables ............................................................... 112
5.6.2 Faults Reported to the RX3i Controller Fault Table ................................. 112
5.6.3 Faults Rep Faults Reported to the RX3i I/O Fault Table ........................... 114
Appendix A: ECM850 Command Line Interface Support .......... 117
A-1 Monitor Level commands ................................................................................ 117
A-2 Modify Level Commands ................................................................................. 118
A-3 ECM850 Commands........................................................................................ 118
Appendix B: IEC 61850 I/O Performance Examples .................. 121

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B-1 Methodology................................................................................................... 121
Appendix C: Protocol Implementation Conformance
Statements (PICS)................................................................... 123
C-1 General ........................................................................................................... 123
C-2 ASCI Basic Conformance Statement................................................................. 123
C-3 ACSI Models Conformance Statement ............................................................. 124
C-4 ACSI Service Conformance Statement ............................................................. 125
Appendix D: Model Implementation Conformance
Statement (MICS) ................................................................... 128
D-1 General ........................................................................................................... 128
D-2 Common Data Class Extensions ....................................................................... 128
D-2.1 Supported common data classes........................................................... 128
D-2.2 Unsupported common data classes....................................................... 128
Appendix E: Protocol Implementation extra Information
for Testing (PIXIT)................................................................... 129
E-1 Introduction .................................................................................................... 129
E-2 Configuration PIXIT ......................................................................................... 129
E-3 Association Model PIXIT................................................................................... 129
E-4 Server Model PIXIT........................................................................................... 130
E-5 Data Set Model PIXIT ....................................................................................... 134
E-6 Substitution Model PIXIT ................................................................................. 135
E-7 Setting Group Control Model PIXIT .................................................................. 136
E-8 Reporting Model PIXIT..................................................................................... 138
E-9 Control Model PIXIT......................................................................................... 140
E-10 Time and Time Synchronization Model PIXIT ................................................... 149

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vi
Warning and Caution Notes as used in this Publication
Warning
Warning notices are used in this publication to emphasize that hazardous voltages,
currents, temperatures, or other conditions that could cause personal injury to exist
in this equipment or may be associated with its use.
In situations where inattention could cause either personal injury or damage to
equipment, a Warning notice is used.
Caution
Caution notices are used where equipment might be damaged if care is not taken.
Notes: Notes merely call attention to information that is especially significant to understanding and operating
the equipment.
These instructions do not purport to cover all details or variations in equipment, nor to provide for every
possible contingency to be met during installation, operation, and maintenance. The information is supplied
for informational purposes only, and Emerson makes no warranty as to the accuracy of the information
included herein. Changes, modifications, and/or improvements to equipment and specifications are made
periodically and these changes may or may not be reflected herein. It is understood that Emerson may make
changes, modifications, or improvements to the equipment referenced herein or to the document itself at any
time. This document is intended for trained personnel familiar with the Emerson products referenced herein.
Emerson may have patents or pending patent applications covering subject matter in this document. The
furnishing of this document does not provide any license whatsoever to any of these patents.
Emerson provides the following document and the information included therein as-is and without warranty of
any kind, expressed or implied, including but not limited to any implied statutory warranty of merchantability
or fitness for particular purpose.

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Introduction 1
Chapter 1: Introduction
This chapter introduces the PACSystems RX3i IEC 61850 Ethernet Communication Module,
or ECM850 for short. The final pages of this chapter are a glossary that define many of the
terms and acronyms used in the manual.
Chapter 2, Installation explains how to install an ECM850, how to complete port
connections, and how to update the module firmware. It also explains how to install the
ECM850’s Universal Serial Bus (USB) port driver and describes how the module synchronizes
its internal clock with the RX3i CPU.
Chapter 3, Configuration explains how to complete and download the configuration for
ECM850s, (IEC 61850 Clients), add Intelligent Electronic Devices (IEDs). and select protocol
variables for monitoring and control. This chapter describes how to use PLC Protocol
Variables (PPVs) in RX3i controller applications. It also describes different configuration
mechanisms: online and offline configuration, configuring specific protocol features like
report control block, polling etc.
Chapter 4, IEC 61850 Client System Operation describes I/O scan operation and application
program blocks for use with the ECM850. This chapter also provides an overview of IEC
61850 communications between the ECM850 and IEDs (IEC 61850 servers). This chapter
defines system constraints with regard to PPV usage, memory usage, and other criteria for
using the ECM850 in control applications.
Chapter 5, Diagnostics explains the power-up and reset process, LED blink patterns, status
reporting, and fatal error reporting. It also describes faults and corrective actions.
The Appendices provide reference information about the ECM850 not required for typical
applications.
Appendix A, ECM850 Command Line Interface Support describes an interface to the
ECM850 used primarily for diagnostics and troubleshooting.
Appendix B, IEC 61850 I/O Performance Examples presents several IEC 61850 network I/O
configurations with the measured I/O performance for each as an aid to computing
estimated I/O performance in other scenarios.
Appendix C, Protocol Implementation Conformance Statements (PICS),
Appendix D, Model Implementation Conformance Statement (MICS), and
Appendix E, Protocol Implementation eXtra Information for Testing (PIXIT) collectively
provide details of the ECM850’s abstract communication service interface (ACSI) and other
information required to demonstrate conformance to the IEC 61850 standard.
For additional information, please refer to the manuals listed below. Manuals can be
downloaded from the Support website referenced in Contact Information at the front of this
manual.
PACSystems CPU Reference Manual, GFK-2222
PACSystems RX3i System Manual, GFK-2314.

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Introduction 2
PACSystems RX3i PROFINET Controller Command Line Interface Manual, GFK 2572
For detailed information about the IEC 61850 standard, contact the International
Electrotechnical Commission Technical Committee 57, Power Systems Management and
Associated Information Exchange: www://tc57.iec.ch/
1.1 Description
The PACSystems RX3i IEC 61850 Ethernet Communication Module, catalog number
IC695ECM850, or ECM850, connects a PACSystems RX3i controller to an IEC 61850
network, enabling the controller to act as an IEC 61850 Client and communicate with
Intelligent Electronic Devices (IEDs, IEC 61850 servers
1
) on the network using the IEC 61850
protocol. (IEC 61850 is a standard for the design of electrical substation automation.) The
ECM850 provides the functions and services required for an IEC 61850 Client, as described
in the PICS and MICS in the appendices.
The ECM850 supports 10/100/1000 Mbps copper, 100/1000 Mbps multi-mode fiber, and
100/1000 Mbps single-mode fiber Ethernet connections. The network can include media
interfaces of more than one type.
Figure 1
1
Virtually all IEC 61850 Intelligent Electronic Devices (IEDs) function as servers, so within the context of this manual, the term IED may be
understood to be an IEC 61850 server device.

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Introduction 3
Features of the ECM850 include:
•Supports the following IEC 61850 client features
—Multiple connections to IEDs
—Read and write of data values
—Control model –all models
—Report by exception –reporting buffered and un-buffered
—Browse data model –logical devices, nodes, data objects & attributes
—Self-description support –reads data model from IED over IEC 61850 network
Note: Refer to the appendices for details.
•Full programming and configuration services for the IEC 61850 Client, including
reading of device Substation Configuration Language (SCL) files and reading
configuration data online directly from IEDs using the Machine Edition
programming and configuration application.
•Supports operation in hot standby redundant systems.
•Firmware upgrades using the WinLoader software utility.
•Built-in command-line interface function that supports direct monitoring and partial
configuration by means of the module’s Micro USB port or Telnet over Ethernet.
Note: The USB port is intended for system setup and diagnostics only. It must not remain
permanently connected.
•Support for both star (switched) and linear (daisy-chained) network topologies.
•Four switched Ethernet ports —two eight-conductor RJ-45 shielded twisted pair
10/100/1000 Mbps copper interfaces and two Small Form-factor Pluggable (SFP)
cages for user-supplied SFP devices.
•Internal clock synchronized with the RX3i CPU for time-stamped diagnostics
•Multicast Simple Network Time Protocol (SNTP) client support for synchronizing the
module’s internal clock with an external clock using SNTP over Ethernet.
•Restart pushbutton to manually restart the module without power cycling the
system.
•Indicator LEDs: OK, LAN, STATUS, CONN, ACTIVE, USB, and four port active LEDs (1-
4).

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Introduction 4
1.2 Specifications
ECM850 Specifications
Protocol Support
IEC 61850 Client as per PICs and MICs specifications
CPU Compatibility
RX3i CPUs with firmware version 8.05 or higher
(CRU320, CPU320, CPU315, CPE305, CPE310)
PAC Machine Edition Compatibility
Machine Edition 8.0 SIM 7
Power Requirements
3.3V: 1.2 A with no SFP devices installed
1.9 A maximum (2 SFP devices installed, 0.35 A
per SFP device)
5V: 1.1 A maximum
Operating Temperature Range
0 to 60°C
Derated to 57°C:
•if 100 MB Fiber SFPs installed, or
•if Copper SFPs operating at 1 GB.
Number of Port Connectors
Two RJ-45 and Two SFP Cages
(SFP devices not included, available separately.)
Micro USB Connector
One, for communication with a computer using
Command Line Interface.
Local Area Network (LAN
IEEE 802.2 Logical Link Control Class I
IEEE 802.3 CSMA/CD Medium Access Control
10/100/1000 Mbps
CPU Status Bits
32
Polling Rate2
Configurable for every IED connection from 0 to 31267
msec (default is 1000 msec).
Number of IP Addresses
One
Number of MAC Addresses
Five. One per external port and one internal.
Network Topologies Supported
Star (switched), linear (daisy-chain)
Time Synchronization
SNTP Client –Multicast and Broadcast
System Maximum Limits
ECM850s per RX3i CPU
Four (4). All must be located in main rack. (Use in remote
or expansion racks not supported).
No of IED connections supported per
ECM850
32
No of IED connections supported per
RX3i CPU
128
Maximum I/O Memory per ECM850
32 Kbytes of combined Input/ Output memory
Maximum I/O Memory per RX3i CPU
128 Kbytes of combined Input/ Output memory
No of PLC Protocol Variables1(PPVs)
per ECM850
5000
No of PPVs per RX3i CPU
20000
Hot-swappable
Yes

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Introduction 5
1. “PLC Protocol Variables” is defined as the set of RX3i controller variables which represent the
IEC 61850 protocol data attributes in a structured format in a variable list. This typically
includes the additional variables which are required to perform “WRITE” operations to an IED.
See section 3.3.9 Generate PLC Protocol Variables (PPVs) for each ECM850, for more details.
2. The polling rate for each IED connection can be configured by the IEC 61850 Configurator.
ECM850 also supports unsolicited communication using report control blocks (RCB). The RCB
can be used for faster updates irrespective of polling rate, based on RCB trigger options. The
configuration of polling rate and RCBs is described in Chapter 3, and polling mechanisms are
described in section 4.3 ECM850 I/O Scan Mechanism
For product standards, general operating specifications, and installation requirements,
refer to the PACSystems RX3i System Manual, GFK-2314.
1.3 Controls and Indicators
The illustration below shows the front of the ECM850 and identifies its controls and
indicators.
Figure 2
1.3.1 Secure Digital (SD) Card Slot
The SD card slot is designed to support non-volatile memory cards in both standard capacity
(SD) and high-capacity (SDHC) formats. It is provided for future use.
1.3.2 Switched {XE Switch} Ethernet {XE Ethernet} Ports {XE
Ports}

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Introduction 6
The ECM850 connects to an IEC 61850 network by means of one or more of its four switched
external Ethernet ports. Two 8-conductor RJ-45 shielded twisted pair 10/100/1000 Mbps
copper interfaces and two Small Form-factor Pluggable (SFP) cages provide flexibility in
media selection.
Figure 3
The module is assigned five Ethernet MAC addresses: one for each of the four external
Ethernet ports and one for the internal switch.
1.3.3 Port Status Indicators
Each external Ethernet port has an associated link-up/link-down status bit that can be
monitored by the RX3i CPU to check the operating status of the port (see “Status Reporting”
in Chapter 5:, “Diagnostics,” for information about the ECM850 status bits). In addition, the
four Port LEDs on the front of the module provide a visual indication of the port status.
1.3.4 Small Form-factor Pluggable (SFP) Modules for Ethernet
Ports
Each SFP cage on the bottom of an ECM850 is capable of accepting a 10/100/1000 Mbps
copper SFP module, 100 Mbps Single-Mode Fiber SFP, 100 Mbps Multi-Mode Fiber SFP, 1000
Mbps Single-Mode Fiber SFP, or 1000 Mbps Multi-Mode Fiber SFP device. SFP devices can
be removed and replaced during module operation. The ECM850 supports the SFP devices
listed below. An SFP type other than those listed below may be configured as a GENERIC SFP
in Machine Edition. The ECM850 will attempt to operate with a generic SFP that identifies
itself as an Ethernet SFP. Since SFP types other than those listed below have not been
validated, correct operation cannot be guaranteed.
SFP Type
Wavelength
(nm)
Media
Type
Core Size
(µm)
Modal
Bandwidth
(MHz –Km)
Distance (m)
100BASE-FX1
1300
MMF
62.5
500
2 –2,000
(Full-Duplex)
2 –400
(Half-Duplex)
50
400
50
500
100BASE-
LX10
1300
SMF
9
–
2 –10,000
1000BASE-SX
850
MMF
62.5
160
2 –220
200
2 –275

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Introduction 7
SFP Type
Wavelength
(nm)
Media
Type
Core Size
(µm)
Modal
Bandwidth
(MHz –Km)
Distance (m)
50
400
2 –500
500
2 –550
1000BASE-LX
1300
SMF
9
–
2 –10,000
1000BASE-
ZX
1550
SMF
9
–
2 –70,000
10/100/1000
BASE-T2
–
CAT5/
CAT5e/
CAT6
–
–
100
(maximum)
1Emerson part number IC695SPF002
2 Emerson part number IC695SPC100
1.3.5 Micro USB Port {XE Micro USB Port}
The ECM850 has a USB Micro-B socket for connection to a computer running Windows Vista
or Windows 7. The USB port can be used to access the ECM850’s Command Line Interface
(CLI) function using a terminal emulation application such as HyperTerminal. The Command
Line Interface function can be used to monitor an ECM850 and check its operation. If a
problem occurs, the Command Line Interface can be used to help determine the cause. A
driver installation application is provided to configure a Windows computer to
communicate with the ECM850 through its USB port. See Chapter 2:, Installation, for
instructions.
1.3.6 Restart Pushbutton {XE Restart Pushbutton}
The Restart pushbutton on an ECM850 can be used to manually restart the module without
cycling power. The restart operation begins when the pushbutton is released.
1.3.7 Indicator LEDs
The table below summarizes the light-emitting diode (LED) indicator functions. More
detailed information about error indications and blink patterns is given in Chapter 2:,
Installation and Chapter 5:, Diagnostics.
OK
Indicates whether the module can perform normal operation.
LAN
indicates access to and activity on the Ethernet local area network (LAN). The LAN
LED indicates network packets are being processed by the network interface (not just
passing through the embedded switch)
STATUS
Indicates the condition of the ECM850 during normal operation. It indicates whether
an entry other than the startup event is present in the module’s local log. STATUS can
also indicate whether any of the MAC addresses are invalid.
CONN
Indicates whether the module has received its configuration from the RX3i CPU.
ACTIVE
Indicates the status of IED connections.
USB
Indicates activity on the USB port.

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Introduction 8
1, 2, 3, 4
Indicate link speed, link connection and link activity corresponding to the four
external Ethernet ports.
1.4 IEC 61850 Networks for PACSystems
IEC 61850 is an international standard for the design of electrical substation automation
that defines the communication between electrical switchgear and substation control
equipment. An IEC 61850 Client connects to and communicates with multiple Intelligent
Electronic Devices (IEDs, or IEC 61850 Servers) over an IEC 61850 network. This enables
configuration, parameterization, and diagnostics communication between controllers and
devices.
Note: The ECM850 operates only in auto negotiate mode. All bus devices and switches that are
connected to the module should be configured to use auto negotiation.
1.4.1 PAC Machine Edition Configuration and Programming
Machine Edition is used to configure the ECM850’s IEC 61850 client system. The IEC 61850
connectivity configuration with IEDs and selection of IEC 61850 data objects and attributes
can be done using an integrated IEC 61850 Configurator in the Machine Edition. The
Machine Edition application automatically generates PLC Protocol Variables (PPVs) in the
object-oriented model. These PPVs are available in controller programs as CPU symbolic
variables, enabling the RX3i controller to control, monitor, and sequence the operation of
IEDs using these variables.
Machine Edition provides two methods of configuring an ECM850: online and offline.
Online Configuration: The IEC 61850 data model can be directly read from the IED over the
IEC 61850 network if the IED is connected to same network as the computer on which
Machine Edition is installed. The Configurator provides a mechanism to then browse the
data model of the device and select data objects and data attributes (DO/DA) for the RX3i
controller.
Offline Configuration: The IEC 61850 data model can be directly read or imported from an
IED configuration file (ICD or CID file). The Configurator provides a mechanism to then
browse the data model of the device and select data objects/attributes for the controller.
Note: Adding variables manually in the IEC 61850 Configurator is not recommended, as this may
result in incorrect configuration and validation errors.
The detailed configuration procedure and mechanism is described in Chapter 3 and is also
available in Machine Edition online help.
The next illustration shows a programmer connection (for configuration, user logic
programming, and monitoring), the concept of variable Configuration import, an optional
external Ethernet switch, and the ability of ECM850 to connect to an IEC 61850 IED

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Introduction 9
Figure 4: Programmer Connection
1.5 Basic System: One RX3i CPU and One ECM850
Using a Single Port
Components of an RX3i IEC 61850 network consist of an ECM850 in the RX3i main rack
communicating with IEDs on an IEC 61850 Substation bus (an Ethernet LAN). The main RX3i
rack can include up to four ECM850s, each communicating with its own high-speed
network(s). IEDs on the network can include Emerson IEDs and a wide range of third-party
devices which provide IEC 61850 server functionality. For example, the illustration below
shows a basic system with one PACSystems RX3i CPU node having one ECM850, and one
IEC 61850 network with three Emerson IEDs and one third-party IED. Up to 32 IEDs can be
installed on a single RX3i IEC 61850 network.

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Introduction 10
Figure 5: RX3i CPU with one ECN850 and One IEC61850 Network and three IED’s
1.5.1 Basic System: One RX3i CPU and ECM850 Using Multiple
Ports
The illustration below shows the same basic system as before, with one RX3i CPU with one
ECM850 acting as an IEC 61850 client on a single IEC 61850 network, but this example
shows the ECM850 directly connected to each separate IED in a star topology. Although
each IED is connected to a separate Ethernet port on the ECM850, they are all on the same
network segment, LAN 1.
Figure 6: Basic System with Rx3i CPU and ECM850

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1.5.2 Systems with One RX3i CPU and Two ECM850s
Both examples in this section show systems with one RX3i CPU that has two ECM850s. The
IEC 61850 network can serve up to 128 IEDs (in star topology).
Note that multiple ECM850s in the same rack are not synchronized such that all ECM850s
are guaranteed to power up at the same time. ECM850 configuration differences (SFPs, etc.)
can cause variations in ECM850 power up times.
In the following example, both ECM850s are connected to the same network.
Figure 7
In the next example, the two ECM850s are connected to separate networks.
Figure 8

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1.5.3 One RX3i CPU with Four ECM850s on Separate Networks
This example shows a system with one RX3i CPU node containing the maximum of four
ECM850s, with each ECM850 connected to a different network. In this architecture, up to
128 IEDs are allowed, spread across the four networks. Up to 32 IEDs can be controlled by
an ECM850.
Note that multiple ECM850s in the same rack are not synchronized to ensure that all
ECM850s are guaranteed to power up at the same time. ECM850 configuration differences
(SFPs, etc.) can cause variations in ECM850 power up times.
Figure 9
1.5.4 Two RX3i CPUs, Two IEC 61850 Networks, and One
Supervisory Network
The example on this page shows two RX3i CPU nodes, each with one ECM850 and one RX3i
Ethernet Transmitter Module (ETM). The ECM850s are connected to separate networks
(LAN1 and LAN 2 in the illustration). Network A and Network B are used for IEC 61850 traffic.
The RX3i Ethernet Transmitter Modules are connected to the Supervisory Network.
PACSystems Machine Edition, HMI and Historian use this network to configure and monitor
the application. The Supervisory Network is also used for inter-node communication using
protocols such as Ethernet Global Data (EGD), Service Request Transport Protocol (SRTP),
and Modbus/TCP. The three separate networks do not compete for network bandwidth or
interfere with one another.

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Figure 10
1.6 Glossary
Glossary
ACSE
Abstract Communication Service Event
ACSI
Abstract Communication Service Interface
SCSM
Specific Communication Service Mapping
Broadcast
In Ethernet, the transmission of a network message to all hosts on the network.
CID File
Configured IED Description (CID) files: Type of SCL file as defined in IEC 61850-
6standards
CPU
Central Processing Unit. In the context of this manual, CPU refers to an RX3i
controller
CPU Node
In a PACSystems RX3i IEC 61850 network, a CPU Node is a node that has a
PACSystems RX3i CPU in its rack and is connected to the IEC 61850 network.
DA
Data Attribute
DO
Data Object
ECM
Ethernet Communication Module
EGD
Ethernet Global Data, a client-server protocol that allows controllers to exchange
data with HMI workstations, historian systems, and other supervisory software
ECM850
IEC 61850 Ethernet Communication Module
FC
Functional Constraints
Gbps
Gigabits per second, or 1,000,000,000 bits per second, a measure of a
communication channel’s (such as Ethernet) signaling rate; 1 Gbps = 1000 Mbps
Gratuitous ARPs
An Address Resolution Protocol (ARP) request sent by the host to resolve its own
IP address.
HMI
Human-Machine Interface; typically, a graphical display that displays a system’s
status and alarms and allows operators to monitor and control system operation