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Schneider Electric 840 USE 106 0 manual Theory of IEC Hsby Operation, At a Glance

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Theory of IEC HSBY Operation

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At a Glance

Purpose	This chapter presents the Theory of Operation for the IEC Hot Standby system.
What’s in this
What’s in this	This chapter contains the following topics:
Chapter?
Chapter?	Topic	Page
	Topic	Page

	IEC Hot Standby Definitions	44

	How an IEC HSBY System Works	46

	System Scan Time	47

	State Ram Transfer and Scan Time	51

	Layout of completely transferred state RAM in an IEC Hot Standby system	53

840 USE 106 00 January 2003

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Schneider Electric 840 USE 106 0 manual Theory of IEC Hsby Operation, At a Glance

Contents

USE 106 Quantum Hot StandbyPage Table of Contents Theory of IEC Hsby Operation Using a Quantum 984 Hsby SystemPlanning a Quantum Hot Standby System Additional Guidelines for IEC Hot Standby Using a Quantum IEC Hot Standby SystemMaintenance Ethernet Hot Standby SolutionAppendix B Fiber Optic Cable Guide Specifications for CHS 110 Hot StandbyAppendix a Com Act Error Patterns Appendix C ProWORX Nxt ConfigurationPage Procedure Safety InformationImportant Information Persons Schneider Electric All Rights Reserved Please NoteRelated Documents About the BookAt a Glance Validity NoteAbout the Book Chapter? Overview of Quantum Hot StandbyPurpose What’s in thisOverview of Quantum Hot Standby Introduction 1ControlPurpose What’s in this Section? Hot Standby Primary and Standby ControlDescription Role of the CHSCables See Fiber Optic Cable Guide, p Hardware Components in a Quantum Hot Standby SystemTopology CHS 110 Hot Standby ModulePanel Controls 140 CHS 110 Following table shows the five status indicatorsLED Display ModuleFunction KeyswitchSlide Switch Update ButtonOperation 2OperationModes of Operation Hsby Modes of Hsby has three Modes of OperationIgnores your action Run ModePrimary unit fails 3Cabling Cable Fiber Optic CableConnections CHS 210 Hot Standby Kit Hsby and IEC Hsby Module Version HsbyArchitecture Quantum 984 Hot Standby involvesHsby system Upgrade PLC firmwareRIO is serviced differently IEC compliant languages FBD, LD, SFC, IL and STFiber Optic CHS Link 5HPRWRUJUDWHU Overview StandbyThis chapter contains the following topics Theory of 984 Ladder Logic Hsby OperationHow a 984 Hsby System Works Primary Rack Scan System Scan TimeSolve Segment Scan Leads to the following results Scan Time Increase table belowPLC to CHS Data Transfer RateScan Time Increase Table in PLC Scan Times, p ExampleTime State RAM Transfer and Scan TimeTheory of 984 Hsby Operation Automatic Default Transfer AreaTransfer Primary to the Standby controller on every scan Example Area Alternatives to the default transfer areaCustomizing Options Custom StateCustom Scans Setting upUp using multiple scans to transfer all the data Custom ScansTheory of 984 Hsby Operation Theory of IEC Hsby Operation IEC runtime system IEC Hot Standby DefinitionsDefinitions Following are IEC Hot Standby definitionsOnline -- Memory Statistics IEC HeapCurrently used IEC Heap Size and the Maximum IEC Heap Size Program DataState RAM Defined How an IEC Hsby System WorksIEC Theory Program. There are three steps in the transfer processSystem Scan Time Primary Rack Transfer diagram The following shows a transfer diagramStandby Rack Following result Time Scan Time Increase Table belowIEC Scan Time Increase IEC Scan Time Increase Table See Overall PLC Scan Time, p State Ram Transfer and Scan Time Configured for IEC Hsby Transferred RAM LayoutStandby’s IEC data consistency Theory of IEC Hsby Operation Planning a Quantum Hot Standby System Positioning Guidelines for Planning a Hot Standby SystemPrimary ControllersSafety Precautions Electrical Safety PrecautionsRemote I/O Cable Topologies Configuration Single Cable ConfigurationSingle Cable Primary PLC Dual Cable ConfigurationDual Cable Standby system Standby PLCInstalling a Hot InstallationHow to Install a Hot Standby System ProcedureDamage SettingDesignation Set to B Slide Switches Battery has been disconnected for at least five minutesNetwork Following diagram illustrates the network connectionsStep Aligning Key Locking Ring DiagramConverting to You need backplanes with at least four slots Adding HotUsing a Quantum 984 Hsby System Using a Quantum 984 Hsby System 1Configuration CHS Configuring 984 HsbyModsoft Instruction Installed into your applicationControlling System by CHSSystem Configuration ExtensionHot Standby System by ExtensionCHS Instruction Execute Hsby Unconditionally Enable CommandHsby System Active Using the CHS Instruction Block Hot Standby Command Register Hazard Using CHS Instruction BlockCommand Register Nontransfer Area Within the State RAM Transfer Status Register Elements of the Nontransfer AreaCHS module ConfigurationZoom Screen Zoom screen of CHS InstructionScreens must be identical to those in the CHS block Standby Status Register Hot Standby Status RegisterStatus Register Bits in the HotReverse Transfer Registers Reverse Reverse Transfer Logic ExampleTransfer Logic Segment 000813 Using a Quantum 984 Hsby System Using Configuration ExtensionConcept shown Dialog Standby Concept Hot Standby DialogCommandsystem Register Bits in the Hot Standby Command RegisterHot Standby Command Register Hazard Override Keyswitch Override and Run ModeKeyswitch Override Hazard RunSoftware Control Example Power up the system again. Download the new configurationOption Mismatch Hazard Standby on Logic MismatchesSwapping at SwitchoverModbus Plus Port AddressCheck box Nontransfer Area Transfer All State RAMTransfer All Transferred if this check box is activatedStatus Register for Configuration extension Hot Standby Status Register for Configuration ExtensionAdvanced Advanced OptionsAdditional RAM State RAM dialog Defining the Transfer Area of State RAM12K Option DialogUser Defined Option State RAM Transfer Transfer Additional State RAM Hazard Transferring Additional State RAM Data101 Data Type Scan TransfersBegins again, sending the first 512 additional registers 4Operation Preconditions Starting the System Starting Your Hot Standby SystemStep Action RIO Head Ready FaultStandby Backplane Clock Synchronizing Time-of-Day ClocksSynchronization Network 1 of Segment Following diagram shows synchronizing time-of-day clocksNetwork 2 of Segment While Your System Is Running This chapter presents operating procedures for the IEC Hsby Using a Quantum IEC Hot Standby SystemUsing a Quantum IEC Hot Standby System This section describes Quantum IEC Hot Standby configuration Loading the Software V208 Concept Loadables Installation Screen@1SE V196 @2I7 @2IE V196Standby controller executes the logic of segment IEC Logic in aLoadables are removed from the project automatically UsingExtensions Transfer from Primary to StandbyHot Standby Dialog Standby Dialog Activation of HotConcept 2.5 shown Register is Specifying the Command RegisterStandby Command Register SpecifyRegister. However Hot Standby Command RegisterEnable it RangeSoftware Enable Keyswitch OverrideControl Example Stage Description Comment Options forOption Software ControlAdvanced Options Concept Exec Upgrade Without Stopping Application Stopped CancelStopping the process System Executive Upgrade ProcedureFor Concept Map / Configuration HazardStandby on Logic Mismatch Logic MismatchLogic Global Data Data that do not exist on both controllers is not updatedProject global data that is updated includes Updating ProjectIs also Swapping Addresses at SwitchoverStandby Backplanes IP AddressNOE 771 cannot be controlled, it is always activated Matter if they reside in the Standby or Primary rackState RAM Using a Quantum IEC Hot Standby SystemNontransfer Area of State RAM 4nnnnn Supported only with Concept 2.5 or higher ControllersShows how the number of IEC Hsby Registers can be modified Diagram below shows a PLC Memory PartitionMemory Partition RegistersState RAM Size State RAM SizeSection Transfer Control Section Transfer ControlFBD Select Component of Type Bool Regardless of its designation as a or B 5OperationPreconditions StartingCHS 110 RIO Head 140Normal Operation IEC State RAM Memory/Scantime optimizationMap 142 Memory Prediction Screenshot of the Memory Prediction dialog is shown belowStatistics MemoryFor IEC Hot Standby data Synchronizing Time of Day Clocks Transfers Constant InternalMonitoring Regular DataAdditional Guidelines for IEC Hot Standby Additional Guidelines for IEC Hot Standby General Application Requirements Applications Memory SavingsAssessing Existing IECMemory Following screen shows memory statistics Statistics Memory Statistics152 Optimization Needed to achieve it IEC ApplicationsEfficient Use of State RAM Configured StateRAM Registers Data Efficient UseIEC Application Anything elseEfficiency Tips RealB RealC RealD Use Constants Instead of Equal LiteralsRealF RealG RealH Use Constants Instead of Open Inputs 160 Programmed Logic Reduce the Use Of Complex Data Structures Solution Ethernet Hot Standby SolutionSolution Overview of Hot Standby Solution for NOEsPlease Note Service NOE 771 Drop Hot Standby TopologyDevice can be assigned the configured IP + 1 address NOE Configuration and Hot StandbyTo download a project to the PLC IP Address Assignment ConfiguringTransparency Offline Mode CPU is stopped Primary ModeSecondary Mode Standalone ModeAssignment Effects on IP Address assignment and Ethernet servicesOffline Mode at Power-up Sequence table AddressEthernet Power-UpServices Effects on the Ethernet servicesIP Address Assignment and Going Offline AdditionalInformation Going to OfflineAddress Swap Times Service Typical Swap Time Maximum Swap TimeConnections Hot Standby Swap during Remote Connection Request Network Effects of Hot Standby SolutionBrowsers Remote Connection Request during Hot Standby SwapSubscribe ServiceScanning Publish176 Maintenance Maintenance Health of a Hot Standby System Health Messages Verifying Health of a Hot Standby SystemRecognizing Additional ChecksOr equipment damage SafetyAvoid Damage to Application I/O Devices Errors Startup Errors LEDs Communications ErrorsTroubleshooting Interface ErrorsBoard Level Error 140 CHS 110 Board Level ErrorsReplace the faulty CHS 110 module 10.3 Failures Backplane Detecting Failures in a Hot Standby SystemMain ComponentsDetecting Failures in the Primary Backplane Standby module and RIO head to the chart belowController CHS RIO Head Failure Type Description Controller CHS RIO Head Failure Description Detecting Failures in the Standby Backplane191 Replacement Replacing a Hot Standby Module ReplacementPrimary Backplane Hazard Standby Ogic Changing the Program and Performing a Program UpdateBattery Hazard UpdatingBegin Controller as well Program Change HazardStandby controller Off Line Before YouUpdating Standby Procedure Amber Standby indicator begins to blink Updating Standby Updating PLC System Executives in a 984 Hsby System While Hot Steps to Upgrade Zoom or RDE PLC executivesStandby is Running Updating PLC System Executives in an IEC Hsby System Take the following steps to force a switchover manually TestingForcing a Switchover Switchover Forcing a ManuallyAfter Taking the Primary Controller Offline Primary StandbyBringing the Original Primary Unit Back Online Register, p ThroughSpecifications Specifications for CHS 110 Hot StandbySpecifications for CHS 110 Hot Standby Specifications for CHS 110 Hot Standby Appendix contains the following chapters AppendicesAt a Glance Included hereAppendices Purpose What’s in this Chapter? Com Act Error PatternsPatterns CHS 110 Hot Standby Module Error PatternsCHS 110 Error Number Blinks Code ErrorError Patterns The following table shows error patterns CRP Remote I/O Head Processor Error PatternsNumber Code Error Blinks 212 Fiber Optic Cable Guide Recommen ConnectorsDations Suggested Tools include Other ToolsOther Tools ProWORX Nxt Hot Standby Configuration Extension ProWORX Nxt ConfigurationMenu and select Hsby Extension from the Tree Control Hot Standby Qua Dialog ScreenParameters of a Quantum Hot Standby system FieldFunctions Hot Standby Quantum dialog screenStatus Registers Dialog screen Initial Command RegisterStatus Register Registers dialog screen Offline state Index Numerics Index Automatic, 108 swapping addresses 226