ABB Rellon 620 Series User manual

Relion® 620 series
RER620
IEC 60870-5-101/104 Communication
Protocol Manual

Document ID: 1MAC306892-MB
Issued: 07/20/2017
Revision: C
Product version: 1.3
© Copyright 2017 ABB. All rights reserved.

Copyright
This document and parts thereof must not be reproduced or copied without written
permission from ABB, and the contents thereof must not be imparted to a third party, nor
used for any unauthorized purpose.
The software or hardware described in this document is furnished under a license and may
be used, copied, or disclosed only in accordance with the terms of such license.
Trademarks
ABB and Relion are registered trademarks of ABB Group. All other brand or product
names mentioned in this document may be trademarks or registered trademarks of their
respective holders.
Warranty
Please inquire about the terms of warranty from your nearest ABB representative.
ABB Inc.
Distribution Automation
4300 Coral Ridge Drive
Coral Springs, FL 33065, USA
Toll-free: 1 [phone]
Phone: [phone]
Fax: [phone]
http://www.abb.com/substationautomation

Disclaimer
The data, examples and diagrams in this manual are included solely for the concept or
product description and are not to be deemed as a statement of guaranteed properties. All
persons responsible for applying the equipment addressed in this manual must satisfy
themselves that each intended application is suitable and acceptable, including that any
applicable safety or other operational requirements are complied with. In particular, any
risks in applications where a system failure and/or product failure would create a risk for
harm to property or persons (including but not limited to personal injuries or death) shall
be the sole responsibility of the person or entity applying the equipment, and those so
responsible are hereby requested to ensure that all measures are taken to exclude or
mitigate such risks.
This document has been carefully checked by ABB but deviations cannot be completely
ruled out. In case any errors are detected, the reader is kindly requested to notify the
manufacturer. Other than under explicit contractual commitments, in no event shall ABB
be responsible or liable for any loss or damage resulting from the use of this manual or the
application of the equipment.

Conformity
This product complies with the directive of the Council of the European Communities on
the approximation of the laws of the Member States relating to electromagnetic
compatibility (EMC Directive 2004/108/EC) and concerning electrical equipment for use
within specified voltage limits (Low-voltage directive 2006/95/EC). This conformity is
the result of tests conducted by ABB in accordance with the product standards EN 50263
and EN 60255-26 for the directive, and with the product standards EN 60255-6 and EN
60255-27 for the directive. The protective relay is designed in accordance with the
international standards of the IEC 60255 series and ANSI C37.90

1MAC306892-MB C Section
RER620 1
Communication Protocol Manual
Table of Contents
Section 1 Introduction........................................................................... 5
This manual.............................................................................................. 5
Intended audience.................................................................................... 5
Product documentation ............................................................................ 6
Product documentation set ................................................................. 6
Document revision history................................................................... 7
Related documentation ....................................................................... 7
Symbols and conventions ........................................................................ 7
Safety indication symbols.................................................................... 7
Manual conventions ............................................................................ 8
Section 2 IEC 60870-5 overview .......................................................... 9
IEC 60870-5 protocol ............................................................................... 9
Transmission ............................................................................................ 9
Unbalanced transmission.................................................................. 10
Balanced transmission ...................................................................... 10
Basic application functions ..................................................................... 10
Data acquisition................................................................................. 10
Event acquisition ............................................................................... 11
Interrogation ...................................................................................... 11
Clock synchronization ....................................................................... 11
Command transmission .................................................................... 11
Changes in protocol and link parameters.......................................... 12
Acquisition of transmission delay ...................................................... 12
Analog Value Deadband ................................................................... 12
Section 3 Vendor-specific implementation ......................................... 13
615/620 series implementation .............................................................. 13
Internal IEC 61850 data modeling..................................................... 13
Instances........................................................................................... 13
Selecting between IEC 60870-5-101 and IEC 60870-5-104 ............. 13
Configuring ............................................................................................. 13
Configuring IEC 60870-5-101 ........................................................... 14
Configuring IEC 60870-5-104 ........................................................... 14
Troubleshooting ................................................................................ 15
Event overflow handling ......................................................................... 15
Overflow mode .................................................................................. 15
Overflow indication addresses .......................................................... 15
Overflow situation clearing ................................................................ 16
Supported data types ............................................................................. 16

Section 1MAC306892-MB C
2 RER620
Communication Protocol Manual
Indications (MSP, MDP) .................................................................... 16
Measurements (MMENA, MMENB, MMENC, MMEND) ................... 16
Control objects (CSC, CDC).............................................................. 16
Addressing scheme ................................................................................ 17
Default addresses ............................................................................. 17
Configuring communication options .................................................. 17
Communication parameters ................................................................... 17
Port.................................................................................................... 17
ClientIP.............................................................................................. 17
End delay .......................................................................................... 18
Device address.................................................................................. 18
ASDU address................................................................................... 18
Link mode.......................................................................................... 19
COT length ........................................................................................ 19
OA length .......................................................................................... 19
Link address length ........................................................................... 19
ASDU address length........................................................................ 19
Single character response................................................................. 20
Show bad time................................................................................... 20
Time format ....................................................................................... 20
Event time ......................................................................................... 21
Overflow mode .................................................................................. 21
OvInd IOA.......................................................................................... 21
OvInd NoGI IOA ................................................................................ 21
Event order........................................................................................ 22
Selection time-out.............................................................................. 22
Cyclical period ................................................................................... 22
Transmit window ............................................................................... 23
Receive window ................................................................................ 23
Transmit timeout................................................................................ 23
Receive timeout................................................................................. 23
Link test interval ................................................................................ 24
Diagnostics ............................................................................................. 24
Status ................................................................................................ 24
Received frames ............................................................................... 24
Transmitted frames ........................................................................... 24
Physical errors................................................................................... 24
Link errors ......................................................................................... 24
Transport errors................................................................................. 25
Section 4 IEC 60870-5-101 and IEC 60870-5-104 parameters.......... 27
Parameter list ......................................................................................... 27
Monitored data........................................................................................ 29

1MAC306892-MB C Section
RER620 3
Communication Protocol Manual
Section 5 Glossary ............................................................................. 31

Section 1MAC306892-MB C
4 RER620
Communication Protocol Manual

1MAC306892-MB C Section 1
Introduction
RER620 5
Communication Protocol Manual
Section 1 Introduction
1.1 This manual
The communication protocol manual describes a communication protocol supported by
the protective relay. The manual concentrates on vendor-specific implementations.
1.2 Intended audience
This manual addresses the communication system engineer or system integrator
responsible for pre-engineering and engineering for communication setup in a substation
from a protective relay perspective.
The system engineer or system integrator must have a basic knowledge of communication
in protection and control systems and thorough knowledge of the specific communication
protocol.

Section 1 1MAC306892-MB C
Introduction
6 RER620
Communication Protocol Manual
1.3 Product documentation
1.3.1 Product documentation set
Figure 1: The intended use of manuals in different lifecycles
The engineering manual contains instructions on how to engineer the protective relay
using the different tools in PCM600. The manual provides instructions on how to set up a
PCM600 project and insert protective relays in the project structure. The manual also
recommends a sequence for engineering of protection and control functions, LHMI
functions, and communication engineering for IEC 61850 and DNP3.
The installation manual contains instructions on how to install the protective relay. The
manual provides procedures for mechanical and electrical installation. The chapters are
organized in chronological order in which the protective relay should be installed.
The operation manual contains instructions on how to operate the protective relay once it
has been commissioned. The manual provides instructions for monitoring, controlling and
setting the protective relay. The manual also describes how to identify disturbances and
how to view calculated and measured power grid data to determine the cause of a fault.
The application manual contains application descriptions and setting guidelines sorted per
function. The manual can be used to find out when and for what purpose a typical
protection function can be used. The manual can also be used when calculating settings.
The technical manual contains application and functionality descriptions and lists function
blocks, logic diagrams, input and output signals, setting parameters and technical data
Planning & purchase
Engineering
Installing
Commissioning
Operation
Maintenance
Decommissioning Deinstalling & Disposal
Application manual
Operation manual
Installation manual
Engineering manual
Communication Protocol
manual
Technical manual
Protocol Points List
manual

1MAC306892-MB C Section 1
Introduction
RER620 7
Communication Protocol Manual
sorted per function. The manual can be used as a technical reference during the
engineering phase, installation and commissioning phase, and during normal service.
The communication protocol manuals describe the communication protocols supported by
the protective relay. Each manual concentrates on vendor-specific implementations.
The point list manual describes the outlook and properties of the data points specific to the
protective relay. The manual should be used in conjunction with the corresponding
communication protocol manual.
1.3.2 Document revision history
1.3.3 Related documentation
Product-specific point list manuals and other product series- and product-specific manuals
can be downloaded from the ABB web site http://www.abb.com/ substationautomation.
1.4 Symbols and conventions
1.4.1 Safety indication symbols
Although warning hazards are related to personal injury, it should be understood that
operation of damaged equipment could, under certain operational conditions, result in
Document revision/date Product version History
A/11/23/2010 1.0 First release
B/10/31/2011 1.1 Content updated to correspond to the
product series version
C/07/20/2017 1.3 Content updated to correspond to the
product series version
Download the latest documents from the ABB web site
http://www.abb.com/substationautomation.
The caution icon indicates important information or warning related to the
concept discussed in the text. It might indicate the presence of a hazard
which could result in corruption of software or damage to equipment or
property.
The information icon alerts the reader to important facts and conditions.
The tip icon indicates advice on, for example, how to design your project
or how to use a certain function.

Section 1 1MAC306892-MB C
Introduction
8 RER620
Communication Protocol Manual
degraded process performance leading to personal injury or death. Therefore, comply fully
with all warning and caution notices.
1.4.2 Manual conventions
Conventions used in protective relay manuals. A particular convention may not be used in
this manual.
• Abbreviations and acronyms in this manual are spelled out in the glossary. The
glossary also contains definitions of important terms.
• Push button navigation in the LHMI menu structure is presented by using the push
button icons, for example:
To navigate between the options, use and .
• HMI menu paths are presented in bold, for example:
Select Main Menu > Settings.
• LHMI messages are shown in Courier font, for example:
To save the changes in non-volatile memory, select Yes and press .
• Parameter names are shown in italics, for example:
The function can be enabled and disabled with the Operation setting.
• Parameter values are indicated with quotation marks, for example:
The corresponding parameter values are "Enabled" and "Disabled".
• Protective relay input/output messages and monitored data names are shown in
Courier font, for example:
When the function picks up, the PICKUP output is set to TRUE.
• Dimensions are provided both in inches and mm. If it is not specifically mentioned
then the dimension is in mm.

1MAC306892-MB C Section 2
IEC 60870-5 overview
RER620 9
Communication Protocol Manual
Section 2 IEC 60870-5 overview
2.1 IEC 60870-5 protocol
The companion standards IEC 60870-5-101 and IEC 60870-5-104 are derived from the
IEC 60870-5 protocol standard definition. It specifies a functional profile for basic
telecontrol tasks.
The IEC 60870-5 protocol stack is based on the reduced reference model called enhanced
performance architecture (EPA). EPA includes three layers of the ISO-OSI model.
• Application layer
•Link layer
• Physical layer
The IEC 60870-5 protocol is described by standard documents.
Table 1: Selected standard provision of the defined telecontrol companion standard
Application layer defines the information elements for structuring application data and the
communication service functions. The user process describes an assortment of basic
application functions.
Link layer defines the frame formats and the transmission procedures of the IEC
communication.
Physical layer defines the hardware-dependent specifications of the IEC 60870-5-101/
IEC 60870-5-104 communication interfaces.
2.2 Transmission
IEC 60870-5-101 allows two alternative transmission procedures, unbalanced and
balanced, to be used in the communication between the controlling station (SCADA
system) and the controlled outstation. IEC 60870-5-104 ignores this setting. After
receiving STARTDT command from the controlling station, the controlled station will
start reporting events immediately to the controlling station without requests.
Selected application functions of IEC 60870-5-5 User process
Selected application information elements of IEC 60870-5-4
Selected application service data units of IEC 60870-5-3
Application layer (7)
Selected link transmission procedures of IEC 60870-5-2
Selected transmission frame formats of IEC 60870-5-1
Link layer (2)
Selected ITU-T recommendations Physical layer (1)

Section 2 1MAC306892-MB C
IEC 60870-5 overview
10 RER620
Communication Protocol Manual
2.2.1 Unbalanced transmission
When using unbalanced transmission, the controlling station controls the data traffic by
polling the controlled outstations sequentially. In this case, the controlling station initiates
all the message transfers while the controlled outstations can transmit only in response to
the message from the controlling station.
Table 2: Supported transmission services initiated by the controlling station
2.2.2 Balanced transmission
When using balanced transmission, each station can initiate message transfer. The stations
may act simultaneously as controlling stations and controlled outstations. Therefore they
are called combined stations. In this manual, a combined station is called either a
controlling station or a controlled outstation according to its function in the message
exchange.
The balanced transmission is restricted to point-to-point and to multiple point-to-point
configurations.
The balanced transmission supports SEND/CONFIRM and SEND/NO REPLY
transmission services. The SEND/NO REPLY transmission service can be initiated only
by a controlling station with a broadcast address in a multiple point-to-point configuration.
2.3 Basic application functions
2.3.1 Data acquisition
The data delivered by a controlled outstation can be replies to commands or process values
which are collected cyclically, upon change, or upon request from the controlling station.
All the data is buffered in the controlled outstation because the data may appear faster than
the communication link is able to transfer it to the controlling station.
When unbalanced transmission is used on the link layer, the buffered data must be polled
by the controlling station. The controlled outstation must always wait for a request for
transmission from the controlling station.
When balanced transmission is used on the link layer, the buffered data is transmitted by
the controlled outstation to the controlling station without a delay.
Service Purpose
SEND/NO REPLY For global messages and for cyclic set-point commands from the
controlling station
SEND/CONFIRM For control commands and set-point commands from the controlling
station
REQUEST/RESPOND For polling data from the controlled outstations

1MAC306892-MB C Section 2
IEC 60870-5 overview
RER620 11
Communication Protocol Manual
2.3.2 Event acquisition
Events occur spontaneously at the controlled outstation's application level. The events are
buffered in the controlled outstation because the events may appear faster than the
communication link is able to transfer them.
When unbalanced transmission is used on the link layer, the buffered events must be polled
by the controlling station. The controlled outstation must always wait for a request for
transmission from the controlling station.
When balanced transmission is used on the link layer, the buffered events are sequentially,
without a delay, transmitted by the controlled outstation to the controlling station.
2.3.3 Interrogation
The controlled outstation's interrogation function is used for updating the controlling
station after an internal station initialization, or when the controlling station detects loss of
information.
When the function is used, the controlling station requests the controlled outstations to
transmit the actual values of all their process variables. Normally, the amount of
information is known by the application functions in both the controlling stations and
controlled outstations. The interrogation can be done either by an interrogation group
(1…16) at a time or all groups at once (general).
2.3.4 Clock synchronization
The clock of the controlled outstation has to be synchronized with the clock of the
controlling station. Synchronizing of the clocks provides a correct chronological sequence
of time-tagged events or information objects that are transmitted to the controlling station,
or that are logged locally.
After system initialization, the clocks are initially synchronized by the controlling station.
Then, the clocks are periodically resynchronized by transmission of a clock
synchronization command (C_CS ACT).
The time information must always be corrected either by the controlling station before
sending or by the outstation when an ASDU with time tag is received. A delay acquisition
command can be used to define the measured or estimated transmission delay in the
outstation. The command corrects the time on the outstation side when sending.
2.3.5 Command transmission
A command is used in telecontrol systems to change the state of operational equipment,
for example, a circuit breaker. A command may be initiated by an operator or by automatic
supervisory procedures in the controlling station. Provision against unauthorized access or
against unwanted actions are system- or process-dependent.
The two standard procedures for command transmission are a Direct command or a Select
and execute command.
Direct commands are used by the controlling station to immediately control operations in
the controlled outstations. For safety reasons, the controlled outstation's application

Section 2 1MAC306892-MB C
IEC 60870-5 overview
12 RER620
Communication Protocol Manual
function checks the permissibility and the validity of the received command message, and
operates if the check results are positive.
The two-step command Select and execute is used by the controlling station to:
• Prepare a specified control operation in a controlled outstation
• Check that the correct control operation is prepared
• Execute the command
The preparation is checked by an operator or by an application procedure. The controlled
outstation does not start the control operation until it has received the correct execute
indication. The command transmission is confirmed to the controlled outstation by an
activation confirmation response. After the command is executed, an activation
termination response is sent to the controlling station.
2.3.6 Changes in protocol and link parameters
When the values of the protocol and link parameters are changed, the new values take
effect after they have been committed.
2.3.7 Acquisition of transmission delay
The value of time correction is determined by the sum of the transmission delay and the
internal equipment delay. The transmission delay is a value which can be acquired either
separately by parameterization, or via a dynamic procedure initiated by the controlling
station.
2.3.8 Analog Value Deadband
In certain situations, the user might want to reduce the number of unnecessary events by
using the deadband feature. This feature is available for analog measurements for each
point and may be configured in the configuration tool by setting the Range and Interval
parameters.
The range can, for example, be 0.05 (5%). If the data point value changes beyond the set
value of 0.05 (5%) from the previously sent value, the data will be sent spontaneously as
deadband data. The interval, however, limits the deadbanded value to be sent once per
configured time window which
is defined of the order of seconds. The interval can be set to zero to disable the time
window limiting feature.

1MAC306892-MB C Section 3
Vendor-specific implementation
RER620 13
Communication Protocol Manual
Section 3 Vendor-specific implementation
3.1 615/620 series implementation
3.1.1 Internal IEC 61850 data modeling
The protective relay is natively using the IEC 61850 data model for data processing. In
practice, some data which is not used by the system database might not be available.
Furthermore, the data must be enabled in an IEC 61850 dataset to be able to be reported
by IEC 60870-5-101/104.
3.1.2 Instances
The protocol can be run as multiple instances. Each instance has its own database and
therefore all the data accesses are independently managed. For example, if a client is not
available for event receiving, that does not affect the data buffering for other clients.
Every instance has independent configuration and data object mapping. It is possible to
build a configuration where the amount of information objects is different for the clients.
For example, a client with slow connection gets only the most important data.
3.1.3 Selecting between IEC 60870-5-101 and IEC 60870-5-104
All available protocol instances support both the IEC 60870-5-101 and IEC 60870-5-104
communication. The communication is selected in the Port configuration parameter.
3.2 Configuring
Some parameters are applicable only to either one of the protocols.
It is assumed that all the other settings have their default values. Avoid
changing the other settings unless something is clearly wrong by default.

Section 3 1MAC306892-MB C
Vendor-specific implementation
14 RER620
Communication Protocol Manual
3.2.1 Configuring IEC 60870-5-101
To configure one protocol instance to work as IEC 60870-5-101 slave, configure the
parameters to enable basic communication.
•Port

According to the physical wiring, set either to "IEC101-COM1" or "IEC101-
COM2". Set the correct serial mode and communication baud rate under COM1/
COM2 settings.
•Device Address

Set to match the address set in the master.
•ASDU Address

Usually ASDU Address is the same as link address.
•Link Mode

If the system is configured to use unbalanced communication, set Link Mode to
"Unbalanced". Otherwise, no change is needed.
•COT Length

Usually set to 1. This setting must have the same value in the master and slave
devices.
•IOA Length

Usually, set to 2. This setting must have the same value in the master and slave
devices.
•Link Address Length

Usually set to 1. This setting must have the same value in the master and slave
devices.
•ASDU Address Length

Usually set to 1. This setting must have the same value in the master and slave
devices.
3.2.2 Configuring IEC 60870-5-104
To configure one protocol instance to work as IEC 60870-5-104 server, configure the
parameters to enable basic communication.
•Port

Set to "IEC104 - Ethernet".
•Client IP

Set to match the IP address of the client device.
•ASDU Address

Set to match the address set in the master.
ICheck the communication card jumpers. Refer to applicable manual for
details.