External OPC Client Access User`s Manual
Contents
1. O OPC client features suini eine aa OPC ems lat AA Saladino iaia fusi OPC server features eto At as e nb d e a eil cere OPC Senver Namespaces vii alieni S SABOOO Structure 22 2 0e eine en U user account creating new USED nenn eeeeaeeeaeeeesaeeesaeeesaeeeeneeeeas ser gt authentication oett ull Ile Ris nto 23 24 Contact us ABB Oy Distribution Automation P O Box 699 FI 65101 VAASA FINLAND Tel 358 10 22 11 Fax 358 10 224 1094 ABB Inc Distribution Automation 655 Century Point Lake Mary FL 32746 USA Tel 1 407 732 2000 Fax 1 407 732 2335 www abb com substationautomation Power and productivity for a better world 1MRS755564 H 31 5 2012 Copyright 2012 ABB All rights reserved ADB PAIDID2. must have basic knowledge of client and server architectures in general Grid Automation Controller COM600 4 0 1MRS755564 External OPC Client Access User s Manual 1 4 1 5 Document conventions The following conventions are used for the presentation of material The words in names of screen elements for example the title in the title bar of a window the label for a field of a dialog box are initially capitalized Capital letters are used for the name of a keyboard key if it is labeled on the keyboard For example press the ENTER key Lowercase letters are used for the name of a keyboard key that is not labeled on the keyboard For example the space bar comma key and so on Press CTRL C indicates that you must hold down the CTRL key while pressing the C key to copy a selected object in this case Press ESC E C indicates that you press and release each key in sequence to copy a selected object in this case The names of push and toggle buttons are boldfaced For example click OK The names of menus and menu items are boldfaced For example the File menu e The following convention is used for menu operations MenuName gt Menu Item CascadedMenultem For example select File New Type The Start menu name always refers to the Start menu on the Windows taskbar System prompts messages and user responses input are shown in the Courier font For example if you enter a value out of range the followi
3. to enable the DCOM in the client computer This can be done using the DCOMCNEG program If the client computer is running on Windows XP you must note the following the default installation for XP forces remote users to authenticate as Guest This means that DCOM clients cannot connect to a server running on an XP computer unless the Guest account is enabled and has enough rights to launch the server To adjust the setting from the control panel 1 Click Start Control Panel Administrative Tools 2 Open the Local Security Settings window 3 Expand the tree view and select Security Options in the left hand pane 4 Inthe right hand pane scroll down and select Network Access Sharing and security settings for local accounts Right click and select Properties 6 Select Classic local users authenticate as themselves v More information about setting up the DCOM can be found from the Microsoft and OPC Foundation internet sites OPC Foundation has published a number of reports about using OPC via DCOM which can be downloaded from their internet site www opcfounda tion org 1MRS755564 Grid Automation Controller COM600 4 0 External OPC Client Access User s Manual Index A alarms andi eventsi o de E E eet iene k iuge AIT T ini pid dato siria as pelle edili baia C COMB00 scellerata il D data acces van an ea ana ea aue DCOM configuration oci cete uen toe an E anA cee Ten ine PORE anto Diagnostic oro Pm
4. 543 50 1 Device Connection Status e Device Connection Status E REF543 51 4 Device Connection Status VAASA S 20kv vL amp BAY50 B E REF543 BO IED 5 LLNO LN DIRPTOC3S LN Str 1 general StartSignalFromGeneral F Op 1 general e TripSignalFromGeneral 5 DIRRBRF3S LN 5 DIRPTOC3B LN fi DIRRBRF3B LN E TIPTOF 2 LN E TIPTUF 2 LN E T2PTOF 2 LN t t t t t sg T2PTUF 2 LN E PFRC 2 LN E T1PTOF 3 LN E T1PTUF 3 LN T2PTOF 3 LN 5 T2PTUF 3 LN E PFRC 3 LN E DIRPTOC3 7 LN E DIRRBRF37 LN GOT CE CBCSwI120 LN 1 Pos e SwitchPosition E 03 CE E 04 CE E G5 CE E Q6 CE E 091 CE E 092 CE BAY51 B En H Figure 3 5 1 An example view of the area space of an OPC server AE_Area_space bmp Event categories and their vendor specific attributes are shown in Figure 3 5 2 1MRS755564 Grid Automation Controller COM600 4 0 External OPC Client Access User s Manual System Message Device Connection Status Inactive Unmapped Address Update Mapped Address Update Device Configuration Version Status Inactive m SimpleDiscreteE vent o cy O LNDesc O DODesc O IEDName Operator Process Change Discrete e cy O LNDesc D Desc O IEDName Level m Trip CV LNDesc D Desc IEDName Device Connection Status Device Configuration Version Status ConditionDiscr
5. External OPC Client Access User s Manual Power and productivity for a better world 1MRS755564 Issued 10 03 2005 Version H 31 5 2012 Grid Automation Controller COM600 4 0 External OPC Client Access User s Manual Contents About this manual id De nee Y na dag a 5 Tlc Copyrights 4 enter ies det o ar Oti eb ettet ease alae oett iude 5 1 25 hradenmiarkS 2 a pere EE D Eee 5 1 3 General retail kd 5 1 4 Document conventions meme 6 1 5 Use 0f symbols cene p te Pul bc d mte ias 6 1162 TerMnolOgy CP EE 7 1 4 vAbbrevi tioris uere eR Gr RI RD URS 8 1 8 Related documents 9 1 9 Document revisions eere 10 Introduction ani 11 2 1 About this section 11 2 2 COM600 with 3rd party OPC Client nennen 11 2 3 Common features of OPC servers of COM600 12 Accessing OPC servers of COM600 13 3 1 About this section e 13 3 2 Requirements for the OPC Client een 13 3 3 COM600 OPC servers 13 3 4 Data access E utendi Er ai 14 3 5 Alarms and Events 19 3 6 DCOM configuration ett 22 Index eine leali 23 1MRS755564 Grid Automation Controller COM600 4 0 External OPC Client Access User s Manual 1 1 1 2 1 3 About this manual Copyrights The information in this document is subject to change without notice and should not be const
6. M600 e Possibility to modify DCOM and possible firewall settings to allow OPC DCOM communication with COM600 COM600 OPC servers In Figure 3 3 1 and Figure 3 3 2 you can see the difference between viewing the OPC servers and clients of an example project in Station Automation Builder 600 later referred to as SAB600 and viewing them in a 3 party browser EI Wi Gateway 3 3 x H Ma Process Event Definitions E 39h Communication Diagnostic E vent Definitions E tl Common Event Settings H Scale Definitions SPA OPC Server LON OPC Server 1 3 IEC101 Slave OPC Client SAB600_servers bmp Figure 3 3 1 Example project as seen in SAB600 Grid Automation Controller COM600 4 0 External OPC Client Access User s Manual 1MRS755564 29 10 58 125 212 5 Data Access V1 Data Access V2 0 IEC 60870 5 101 Slave OPC DA Server Instance 1 0 LON OPC DA Server Instance 1 SPA OPC DA Server Instance 1 Alarms and Events IEC 60870 5 101 Slave OPC AE Server Instance 1 0 LON OPC AE Server Instance 1 SPA OPC AE Server Instance 1 OPC Servers jpg Figure 3 3 2 Example project loaded to COM600 and browsed with a 3rd party OPC Client The 3 party browser shows the separate servers for the Data Access and Alarms and Events The instance numbers of the servers are embedded in brackets to the name of the server The diagnostic and control OPC servers for the IEC101 Slave are also shown in the list 3 4 D
7. RECS70_91 Device Connection Status Device Connection Status 1 Device Con 131148693 Device Con 1ECEIESO SubneltworkNRECS70 SONDevice Connection Status Device Connection Statut 1 Device Con 131148713 Device Con pics AE_conditions jpg Figure 3 5 4 An example view of condition events 21 Grid Automation Controller COM600 4 0 1MRS755564 External OPC Client Access User s Manual 3 6 22 DCOM configuration User authentication is required between the client and the server computer In practice this means that the same user account with the same password must exist in the COM600 Computer and in the 3 party OPC Client computer The OPC Client must be run within this user account OPC servers in COM600 Computer are run within a preconfigured user account named as COM600 factory default password aEc2006rs One possibility is to create the COM600 user to the client computer as well and run the OPC Client within this user account Another possibility is to create a new user to the COM600 Computer the same user that is used in the client computer In the latter case it is still required to create the COM 0600 user to the client computer as it is needed for the OPC servers access to the client computer Note that if you want to change the default COM600 user s password it must be done using the management tool in SAB600 as the password is configured in the DCOM configuration for each component in COM600 It is also required
8. Val 2 GOOD OxcO 2004 09 18 12 01 42 733 subVal BAD 0x0 1601 01 01 02 00 00 000 subID BAD 0x0 1601 01 01 02 00 00 000 subQ 0 GOOD 0xc0 2004 09 18 12 01 39 107 Refresh subEna False GOOD 0xc0 1601 01 01 02 00 00 000 stSeld False BAD 0x0 1601 01 01 02 00 00 000 ctlSelOff 0 GOOD 0xc0 1601 01 01 02 00 00 000 ctisel n 0 GOOD 0xc0 1601 01 01 02 00 00 000 ctloperOff 0 GOOD 0xc0 1601 01 01 02 00 00 000 ctloperon GOOD 0xc0 1601 01 01 02 00 00 000 ctlCan 0 GOOD OxcO 1601 01 01 02 00 00 000 lt de Tool connection p VW Follow selected pos dpc online diagnostics jpg Figure 3 4 4 OPC items of Pos data object monitored with SAB600 online diagnostics Pos object is an instance of DPC Controllable Double Point data class 17 Grid Automation Controller COM600 4 0 1MRS755564 External OPC Client Access User s Manual For the 3 party OPC Client the OPC items can be found from the namespace below the data objects in Figure 3 4 5 OPC items of a data object are specified by the data class of the object Generally the names and the usage of these OPC items are protocol independent Further information about the data classes their OPC items and mapping to certain protocol can be found from the data object modeling chapter in the technical reference of protocol specific user s manuals For more information on data modeling according to the IEC 61850 standard refer to the section IEC 61850 Data modelin
9. ata access The OPC server namespace consists of channels IEDs logical devices logical nodes and data objects 14 1MRS755564 Grid Automation Controller COM600 4 0 External OPC Client Access User s Manual LON OPC Server 1 T Gq LON Channel HO10_REF 543 59 j LD LDI 44 see eee et ee ee SU AA A AA AA AE LN LN LN LN LN LN LN LN L LN LN LN LN LN LN LN LN LN LN LN ms Beh Ins Health inc Mod LPL NamPlt DPC Pos INC OpCntRs CSWI2 CSWI3 CSWI4 CSWIS CSWI6 CSWI7 BIO2 GGIO1 MMXUT MMXUZ PS_1Card_GGIO2 PTOCI PTOC2 PTOC3 PTOF1 PTOF2 PTTR1 PTUF1 PTUF2 Figure 3 4 1 LON OPC Server namespace in SAB600 LON OPC Server namespace in SAB600 jpg 15 Grid Automation Controller COM600 4 0 1MRS755564 External OPC Client Access User s Manual 16 amp LON OPC D Server Instance 1 10 58 125 212 LON Channel E Attributes 5 HOMO REF 543 53 E Attributes 3E LD1 ch E Health fi Mod E NamPlt E OpCntRs Pos El cl n N CSWI7 BIO2 GGIO1 MMXUT MMXU2 5 PS 1Card GGIO2 a PTOCI E PTOC2 E PTOC3 E PTOF1 a PTOF2 x g PTTR1 g PTUF1 a PTUF2 O Station Remote Switch OPC Path E Attributes FA 0000000 s e Hr n LON_OPC_Server_namespace jpg Figure 3 4 2 LON OPC Server namespace in 3rd party OPC Client LON OPC Server namespace in SAB600 and 3 party OPC Client are almo
10. e 1MRS755564 Grid Automation Controller COM600 4 0 External OPC Client Access User s Manual Abbreviation Description LMK LonMark interoperable device communicating in LonWorks network In this document the term is used for devices that do not support the ABB LON LAG communication LN Logical Node LSG LON SPA Gateway NCC Network Control Center NUC Norwegian User Convention NV Network Variable OLE Object Linking and Embedding OPC OLE for Process Control P amp C Protection amp Control PLC Programmable Logic Controller POU Program Organization Unit RTS Request To Send SA Substation Automation SCD Substation Configuration Description SCL Substation Configuration Language SFC Sequential Function Chart SLD Single Line Diagram SNMP Simple Network Management Protocol SNTP Simple Network Time Protocol SOAP Simple Object Access Protocol RCB Report Control Block URCB Unbuffered Report Control Block XML eXtended Markup Language 1 8 Related documents Name of the manual MRS number COM600 User s Manual 1MRS756125 Grid Automation Controller COM600 4 0 1MRS755564 External OPC Client Access User s Manual 1 9 10 Document revisions Document version date Product revision History A 10 3 2005 B 16 10 2006 C 21 12 2007 Document created Document revised Document revised 2 o o o o o o olals w nh gt oflo D 17 6 2008 Document revised E 13 2 2009 Document rev
11. eteE vent IEC 61850 OPC AE Server Instance 1 Event space E D AE_Event_space jpg Figure 3 5 2 An example view of event categories of an OPC server Example views of simple and tracking events and condition events are shown in Fig ure 3 5 3 and Figure 3 5 4 Substation S Station4 VL B ay94 B NAE C670_S4 IED Device Connection Status J 13 16 04 292 Subeciplon IEC61950 Subretwod REC670_94 Dewice Connection Status Connection OK 131604292 EC 61850 Subscription IEC61850 Subretwork REC670_S2 Device Connection Statut i Connection OK 131604101 C61850 Subscription Substations NStahon amp VL NBAYBO B NQOT CE NCBCS WI 20 LN VPos 10 Open 131601774 IEC 61850 Subscription Substation S NStationG V NBAY80 B NOOT CE NCBCS WT 20 LN NPos 10 Open Executed 131601 658 IEC 61850 Subscription Substation S NStsbonb VL NBAY BO B VQOT CE NOBCSW1120LN Pos 10 Open Selected 131858545 IECG1850 Subscription Timesync chent 3 Synchronize Adjusted ok 131552133 IEC 61850 Subscription IEC61850 Subretwod REC670_91 Device Connection Statut 1 Connection OK 131538994 IEC61850 Subscription 16051850 Subretwork RE C670 SONDevice Connection Status 1 Connection OK 131538594 EC61850 Subscription Substation S NStationd VL NB ay93 B NRE C670 S3 IEDNDewice Connection Status 1 Connec
12. g in COM600 User s Manual 1 4 LON OPC DA Server Instance 1 10 58 125 212 LON Channel 5 Attributes 5 HO10_REF 543 58 5 Attributes LD1 E Health E Mod 5 NamPit E OpCntRs amp g Pos stval subVal sublD subQ subEna stSeld ctlSelOff ctiSelOn ctlOperDff ctlOperOn ctlCan 00000000000 pos dpc jpg Figure 3 4 5 OPC server namespace with the OPC items of Pos data object viewed with 3rd party OPC Client Figure 3 4 6 shows group of OPC items subscribed by 3 party OPC Client and monitored in a Diagnostic Tool The figure also shows how the full OPC item name consists of the complete path name to the object with the backslash V character as a separator 1MRS755564 Grid Automation Controller COM600 4 0 External OPC Client Access User s Manual 3 5 Item Value Quality TimeStamp Server Group 2 LON ChanneHO010 REF 543_59 LD14CSWI1 Pos st al GOOD 09 01 42 733 LON OPC Group LON Channel HO10_REF 543_59LD1 CSWI1XPos ctlSelDff 0 GOOD 00 00 00 000 LONOPC Group LON ChanneHO10 REF 543_59LD1 CSWI1 Pos ctSelOn 0 GOOD 00 00 00 000 LONOPC Group LON Channel HO10_REF 543_59LD1 CSWI1APos ctlO perDff 0 GOOD 00 00 00 000 LONOPC Group LON Channel H010_REF 543_59 LD14 CSWI1 Pos ctlOperOn 0 GOOD 00 00 00 000 LON OPC Group LON Channel HO10_REF 543_59 LD1 CSWI1 Pos ctlCan 0 GOOD 00 00 00 000 LONOPC Group LON ChannelHO010 REF 543 59 AttributesNDevice connectio
13. ised F 06 11 2009 Document revised G 30 6 2011 Document revised H 31 5 2012 Document revised 1MRS755564 Grid Automation Controller COM600 4 0 External OPC Client Access User s Manual 2 1 2 2 Introduction About this section In this section you will find an overview of a typical system with COM600 and a 3 party OPC Client accessing the OPC servers of this gateway This section also gives an overview of the internal structure of COM600 as well as of COM600 OPC servers COM600 with 3rd party OPC Client Below you can see an overview of a typical COM600 system with a third party OPC Client Ug a AM C u 4 Deo D 577 2 577 overview jpg Figure 2 2 1 System overview Station Automation Builder 600 SAB600 COM600 NCC 3 party system with an OPC Client Protection and control devices UR oou c COM 0600 uses OPC servers for master client protocol stacks to provide access to the data in the devices connected to COM600 COM600 slave OPC clients use these OPC Grid Automation Controller COM600 4 0 1MRS755564 External OPC Client Access User s Manual 2 3 servers internally to provide data for remote systems with a certain communication pro tocol Each slave OPC Client component includes a small OPC Data Access server for diagnostic and control purposes External OPC Clients can also access the OPC servers of COM600 if enabled in the COM600 license Third party control syste
14. ms with OPC Client can therefore easily access data from COM600 without using any conventional communication protocol External OPC Clients are connected to COM600 via LAN using DCOM DCOM must be configured both in the client computer and in COM600 to allow the access More about DCOM configuration is explained in 3 6 DCOM configuration Common features of OPC servers of COM600 e Supports OPC Data Access 1 0 2 0 specification for process and diagnostic data e OPC namespace and process data modeled according the IEC61850 standard Update rate zero supported on OPC DA for no loss of events based update e OPC DA items timestamped by the source device when applicable by the protocol and device e OPC items for system supervision and communication diagnostic and control e Supports OPC Alarm amp Event 1 10 specification for process and diagnostic data 1MRS755564 Grid Automation Controller COM600 4 0 External OPC Client Access User s Manual 3 1 3 2 3 3 Accessing OPC servers of COM600 About this section In this section there is a list of the requirements that have to met by the 3 party OPC Client as well as information on Windows settings user IDs DCOM This section also gives you an overview of how to access the OPC servers of COM600 with a 3 party OPC Client Requirements for the OPC Client e Windows 2000 or XP operating system Support for OPC Data Access 2 0 Specification e LAN DCOM connection to CO
15. n Guideline for A proprietary method of ABB on top of the standard LON pro substation automation LAG tocol Substation Configuration Lan XML based description language for configurations of electrical Description Series of standards specifications aiming at open connectivity in industrial automation and the enterprise systems that support industry Representation of a connection to the data source within the OPC server An OPC item is identified by a string lt object path gt lt property name gt Associated with each OPC item are Value Quality and Time Stamp Named data item The report control block controls the reporting processes for event data as they occur The reporting process continues as long as the communication is available ABB proprietary communication protocol used in substation automation Protection and or Control Product supporting the SPA protocol version 2 5 or earlier guage SCL substation IEDs Defined in IEC 61850 standard Abbreviations Abbreviation Description AE Alarms and Events ASDU Application Service Data Unit BRCB Buffered Report Control Block DA Data Access DMCD Data Message Code Definition DO Data Object GW Gateway component connecting two communication networks together HMI Human Machine Interface IEC International Electrotechnical Commission IED Intelligent Electronic Device LAG LON Application Guideline for substation automation LAN Local Area Network LD Logical Devic
16. n status 1 GOOD 09 01 42 432 LONOPC Group opc_items_monitored_with_3rd_party_opc_client jpg Figure 3 4 6 OPC items monitored with 3rd party OPC Client Alarms and Events The OPC Alarms and Events server interface is available for each master and slave protocol component For both master and slave components it can be used for supervising the communication status with diagnostics events For master protocols it is also possible to configure alarms and events for process data Alarms and events are configured by linking the data objects and event definitions See COM600 User s Manual for detailed information about the configuration of alarms and events The names for alarms and events are based either on the communication structure or substation structure names If the data is connected to the substation structure the name is based on the substation structure otherwise the name is based on the communication structure Simple and condition type events can be configured for discrete signals for example single and double point status as well as for measurement limit value supervision Control operations can be configured for tracking events The event area of the OPC servers can be browsed using the browsing interface see Figure 3 5 1 19 Grid Automation Controller COM600 4 0 External OPC Client Access User s Manual 1MRS755564 20 E e IEC 61850 OPC AE Server Instance 1 Area space 5 IECB1850 Subnetwork c e REF
17. ng message is displayed Entered value is not valid The value must be 0 30 You can be asked to enter the string MIF349 in a field The string is shown as follows in the procedure MIF349 Variables are shown using lowercase letters sequence name Use of symbols This publication includes warning caution and information icons that point out safety related conditions or other important information It also includes tip icons to point out useful information to the reader The corresponding icons should be interpreted as follows A The electrical warning icon indicates the presence of a hazard which could result in electrical shock A The warning icon indicates the presence of a hazard which could result in personal injury 1MRS755564 Grid Automation Controller COM600 4 0 External OPC Client Access User s Manual 1 6 The caution icon indicates important information or warning D related to the concept discussed in the text It may indicate the presence of a hazard which could result in corruption of software or damage to equipment or property H The information icon alerts the reader to relevant facts and conditions Mr The tip icon indicates advice on for example how to design your project or how to use a certain function Terminology Term Description Alarm An abnormal state of a condition Alarms and Events AE Data Access DA Data Object DO Data Set Device Event Intelligent Elec
18. rued as a commitment by ABB Oy ABB Oy assumes no responsibility for any errors that may appear in this document In no event shall ABB Oy be liable for direct indirect special incidental or consequential damages of any nature or kind arising from the use of this document nor shall ABB Oy be liable for incidental or consequential damages arising from use of any software or hardware described in this document This document and parts thereof must not be reproduced or copied without written per mission from ABB Oy 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 1s furnished under a license and may be used copied or disclosed only in accordance with the terms of such license Copyright 2012 ABB All rights reserved Trademarks ABB is a registered trademark of ABB Group All other brand or product names men tioned in this document may be trademarks or registered trademarks of their respective holders General This user s manual provides thorough information on Station Automation COM600 later referred to as COM600 focusing on giving instructions of how a 3 party OPC Client can access the OPC servers of COM600 Information in this user s manual is intended for application engineers who have to access the OPC servers of COM600 with a 3 party OPC Client and have to configure the different components As a prerequisite you
19. st identical with some differences For example the scale definitions seen in the SAB600 namespace are not visible in the OPC server namespace and the attributes appear in the OPC server namespace but not in the SAB600 namespace Attributes Figure 3 4 3 contain OPC items for communication diagnostics and special functions like file transfer and transparent communication access 1MRS755564 Grid Automation Controller COM600 4 0 External OPC Client Access User s Manual LON OPC DA Server Instance 1 10 58 125 212 LON Channel E Attributes E Diagnostic counters O Transmitted messages O Failed transmissions Timeout errors Received messages LON Driver Error Response Error in Message Format O Object status Inuse HO10_REF 543_59 Attributes Bi File transfer 5 Diagnostic counters O Reply timeouts O Received process messages SM reply ignored Object status In use Device connection status Diagnostic events enabled Transparent SPA Node number Subnet number Unit number 00000000 5 LD1 E Attributes Protocol stack version Reset O File version Product version attributes jpg Figure 3 4 3 LON OPC Server namespace and the attributes The OPC items in data objects contain the actual process data The items are not visible in the SAB600 namespace but they can be monitored online using the Diagnostic Tool in Figure 3 4 4 Name Value Quality Timestamp Write value st
20. tion OK 121538794 IEC61850 Subscription IEC61850 Subretwod REC670_S3Device Connection Status 1 Connection OK 131538794 IEC 61850 Subscription SubstaboriS NStshonal VL NB yS4 B NRECS70 SANEDNDevice Connection Status 1 Connection OK 131538704 IEC 61850 Subscription AE_simple_tracking_events jpg Figure 3 5 3 An example view of simple and tracking events IECE1650 Subretwork REF543_S4 LDT ESWCSW112X Pos 101745083 IECET850 Subnetwerk WREM543_66 LDI ESWCSWI129 Pos SwitchPoslion 10 Intermediate 105525496 Intermediste 1EC51850 Subretwork REF545_64 Device Connection Status Device Connection Status 1 Device Con 121132338 Device Con 0 Substator SAStaorEVLIBAYEMBIREFSAS_SANED Device Connection Status Device Connection Status 1 Device Con 1311 32 348 admin Device Con 1EC61850 Subnetwork RECE70_S2 Device Connection Status Device Connection Status 1 Device Con 1311498383 Device Con 1EC61850 Subnetwork RECS70_94 Derica Connection Status Device Connection Status 1 Device Con 131148493 Device Con Substatic S NStaliced VL VB ay94 B NVRECE7O SED Device Connection Status Device Connection Status 1 Device Con 131148493 admin Device Con 1EC61850 SubnelworkNRECS70 S3ADevice Connection Status Device Connection Status 1 Device Con 131148683 Device Con Substatior S NS talon VL VB 338 RECTO SIJEDINDevice Connection Status Device Connection Statue 1 Device Con 131148633 admin Device Con 1EC61850 Subnetwork
21. tronic Device Logical Device LD Logical Node LN LON An OPC service for providing information about alarms and events to OPC clients An OPC service for providing information about process data to OPC clients Part of a logical node object representing specific information for example status or measurement From an object oriented point of view a data object is an instance of a class data object DOs are normally used as transaction objects that is they are data structures The data set is the content basis for reporting and logging The data set contains references to the data and data attribute val ues A physical device that behaves as its own communication node in the network for example protection relay Change of process data or an OPC internal value Normally an event consists of value quality and timestamp A physical IEC 61850 device that behaves as its own commu nication node in the IEC 61850 protocol Representation of a group of functions Each function is defined as a logical node A physical device consists of one or several LDs The smallest part of a function that exchanges data An LN is an object defined by its data and methods A communication protocol developed by Echelon Grid Automation Controller COM600 4 0 1MRS755564 External OPC Client Access User s Manual 1 7 Term OPC OPC item Property Report Control Block SPA SPA device LON Applicatio
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