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Schneider Electric 840 USE 106 0 manual Nontransfer Area of State RAM

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Using a Quantum IEC Hot Standby System

Nontransfer Area of State RAM

Nontransfer Area The nontransfer area contains the Hot Standby status register, which is used to monitor the states of both controllers. You may include other 4x registers in the nontransfer area to reduce scan time.

The Start: field is used to specify the first 4x register in the nontransfer area. The

Length: field is used to define the number of contiguous registers in the nontransfer block. If you choose to define a nontransfer area, the range of legal values for this entry field is 4... n, where n is the number of configured 4x registers. However, when defining the nontransfer area, the command register (first entry of the Hot Standby dialog) must be outside the nontransfer area.

130	840 USE 106 00 January 2003

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Schneider Electric 840 USE 106 0 manual Nontransfer Area of State RAM

Contents

Quantum Hot Standby USE 106Page Table of Contents Theory of IEC Hsby Operation Using a Quantum 984 Hsby SystemPlanning a Quantum Hot Standby System Using a Quantum IEC Hot Standby System Additional Guidelines for IEC Hot StandbyEthernet Hot Standby Solution MaintenanceAppendix C ProWORX Nxt Configuration Specifications for CHS 110 Hot StandbyAppendix a Com Act Error Patterns Appendix B Fiber Optic Cable GuidePage Procedure Safety InformationImportant Information Please Note Persons Schneider Electric All Rights ReservedValidity Note About the BookAt a Glance Related DocumentsAbout the Book What’s in this Overview of Quantum Hot StandbyPurpose Chapter?Overview of Quantum Hot Standby Introduction 1ControlPurpose What’s in this Section? Role of the CHS Primary and Standby ControlDescription Hot StandbyHardware Components in a Quantum Hot Standby System Cables See Fiber Optic Cable Guide, pTopology CHS 110 Hot Standby ModulePanel Controls Module Following table shows the five status indicatorsLED Display 140 CHS 110Update Button KeyswitchSlide Switch FunctionHsby Modes of Hsby has three Modes of Operation 2OperationModes of Operation OperationIgnores your action Run ModePrimary unit fails 3Cabling Cable Fiber Optic CableConnections CHS 210 Hot Standby Kit Hsby and IEC Hsby Quantum 984 Hot Standby involves HsbyArchitecture Module VersionIEC compliant languages FBD, LD, SFC, IL and ST Upgrade PLC firmwareRIO is serviced differently Hsby systemFiber Optic CHS Link 5HPRWRUJUDWHU Standby OverviewTheory of 984 Ladder Logic Hsby Operation This chapter contains the following topicsHow a 984 Hsby System Works Primary Rack Scan System Scan TimeSolve Segment Scan Transfer Rate Scan Time Increase table belowPLC to CHS Data Leads to the following resultsExample Scan Time Increase Table in PLC Scan Times, pState RAM Transfer and Scan Time TimeTheory of 984 Hsby Operation Automatic Default Transfer AreaTransfer Primary to the Standby controller on every scan Example Custom State Alternatives to the default transfer areaCustomizing Options AreaCustom Scans Setting upUp using multiple scans to transfer all the data Custom ScansTheory of 984 Hsby Operation Theory of IEC Hsby Operation Following are IEC Hot Standby definitions IEC Hot Standby DefinitionsDefinitions IEC runtime systemProgram Data IEC HeapCurrently used IEC Heap Size and the Maximum IEC Heap Size Online -- Memory StatisticsProgram. There are three steps in the transfer process How an IEC Hsby System WorksIEC Theory State RAM DefinedSystem 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 Controllers Guidelines for Planning a Hot Standby SystemPrimary PositioningElectrical Safety Precautions Safety PrecautionsRemote I/O Cable Topologies Configuration Single Cable ConfigurationSingle Cable Standby PLC Dual Cable ConfigurationDual Cable Standby system Primary PLCProcedure InstallationHow to Install a Hot Standby System Installing a HotBattery has been disconnected for at least five minutes SettingDesignation Set to B Slide Switches DamageFollowing diagram illustrates the network connections NetworkStep Diagram Aligning Key Locking RingAdding Hot Converting to You need backplanes with at least four slotsUsing a Quantum 984 Hsby System Using a Quantum 984 Hsby System 1Configuration CHS Configuring 984 HsbyModsoft System by CHS Installed into your applicationControlling InstructionExtension Configuration ExtensionHot Standby System by SystemCHS Instruction Execute Hsby Unconditionally Enable CommandHsby System Active Using the CHS Instruction Block Using CHS Instruction Block Hot Standby Command Register HazardCommand Register Nontransfer Area Within the State RAM Transfer Elements of the Nontransfer Area Status RegisterConfiguration CHS moduleZoom Screen Zoom screen of CHS InstructionScreens must be identical to those in the CHS block Bits in the Hot Hot Standby Status RegisterStatus Register Standby Status RegisterReverse Transfer Registers Reverse Reverse Transfer Logic ExampleTransfer Logic Segment 000813 Using Configuration Extension Using a Quantum 984 Hsby SystemConcept shown Hot Standby Dialog Dialog Standby ConceptBits in the Hot Standby Command Register Commandsystem RegisterHot Standby Command Register Hazard Run Keyswitch Override and Run ModeKeyswitch Override Hazard OverrideSoftware Control Example Power up the system again. Download the new configurationOption Standby on Logic Mismatches Mismatch HazardPort Address SwitchoverModbus Plus Swapping atTransferred if this check box is activated Transfer All State RAMTransfer All Check box Nontransfer AreaHot Standby Status Register for Configuration Extension Status Register for Configuration extensionAdvanced Options AdvancedDefining the Transfer Area of State RAM Additional RAM State RAM dialogDialog 12K OptionUser Defined Option State RAM Transfer Transferring Additional State RAM Data Transfer Additional State RAM Hazard101 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 Using a Quantum IEC Hot Standby System This chapter presents operating procedures for the IEC HsbyUsing a Quantum IEC Hot Standby System This section describes Quantum IEC Hot Standby configuration Loading the Software @2IE V196 Concept Loadables Installation Screen@1SE V196 @2I7 V208IEC Logic in a Standby controller executes the logic of segmentTransfer from Primary to Standby UsingExtensions Loadables are removed from the project automaticallyHot Standby Dialog Standby Dialog Activation of HotConcept 2.5 shown Specify Specifying the Command RegisterStandby Command Register Register isRange Hot Standby Command RegisterEnable it Register. HoweverSoftware Enable Keyswitch OverrideControl Example Software Control Options forOption Stage Description CommentExec Upgrade Without Stopping Application Stopped Cancel Advanced Options ConceptSystem Executive Upgrade Procedure Stopping the processLogic Mismatch Map / Configuration HazardStandby on Logic Mismatch For ConceptLogic Updating Project Data that do not exist on both controllers is not updatedProject global data that is updated includes Global DataSwapping Addresses at Switchover Is alsoMatter if they reside in the Standby or Primary rack IP AddressNOE 771 cannot be controlled, it is always activated Standby BackplanesUsing a Quantum IEC Hot Standby System State RAMNontransfer Area of State RAM 4nnnnn Controllers Supported only with Concept 2.5 or higherRegisters Diagram below shows a PLC Memory PartitionMemory Partition Shows how the number of IEC Hsby Registers can be modifiedState RAM Size State RAM SizeSection Transfer Control Section Transfer ControlFBD Select Component of Type Bool Starting 5OperationPreconditions Regardless of its designation as a or B140 CHS 110 RIO HeadNormal Operation IEC State RAM Memory/Scantime optimizationMap 142 Screenshot of the Memory Prediction dialog is shown below Memory PredictionStatistics MemoryFor IEC Hot Standby data Synchronizing Time of Day Clocks Regular Data Constant InternalMonitoring TransfersAdditional Guidelines for IEC Hot Standby Additional Guidelines for IEC Hot Standby General Application Requirements Existing IEC Memory SavingsAssessing ApplicationsMemory Statistics Memory Following screen shows memory statistics Statistics152 Optimization IEC Applications Needed to achieve itEfficient Use of State RAM Configured StateRAM Registers Anything else Efficient UseIEC Application DataEfficiency 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 Ethernet Hot Standby Solution SolutionSolution Overview of Hot Standby Solution for NOEsPlease Note Service NOE 771 Hot Standby Topology DropDevice can be assigned the configured IP + 1 address NOE Configuration and Hot StandbyTo download a project to the PLC IP Address Assignment ConfiguringTransparency Standalone Mode Primary ModeSecondary Mode Offline Mode CPU is stoppedAddress Effects on IP Address assignment and Ethernet servicesOffline Mode at Power-up Sequence table AssignmentEffects on the Ethernet services Power-UpServices EthernetGoing to Offline AdditionalInformation IP Address Assignment and Going OfflineAddress Swap Times Service Typical Swap Time Maximum Swap TimeConnections Remote Connection Request during Hot Standby Swap Network Effects of Hot Standby SolutionBrowsers Hot Standby Swap during Remote Connection RequestPublish ServiceScanning Subscribe176 Maintenance Maintenance Health of a Hot Standby System Verifying Health of a Hot Standby System Health MessagesAdditional Checks RecognizingOr equipment damage SafetyAvoid Damage to Application I/O Devices Errors Startup Errors Interface Errors Communications ErrorsTroubleshooting LEDsBoard Level Error 140 CHS 110 Board Level ErrorsReplace the faulty CHS 110 module 10.3 Failures Components Detecting Failures in a Hot Standby SystemMain BackplaneDetecting Failures in the Primary Backplane Standby module and RIO head to the chart belowController CHS RIO Head Failure Type Description Detecting Failures in the Standby Backplane Controller CHS RIO Head Failure Description191 Replacement Replacing a Hot Standby Module ReplacementPrimary Backplane Hazard Updating Changing the Program and Performing a Program UpdateBattery Hazard Standby OgicBefore You Program Change HazardStandby controller Off Line Begin Controller as wellUpdating 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 Switchover Forcing a Manually TestingForcing a Switchover Take the following steps to force a switchover manuallyPrimary Standby After Taking the Primary Controller OfflineBringing the Original Primary Unit Back Online Through Register, pSpecifications Specifications for CHS 110 Hot StandbySpecifications for CHS 110 Hot Standby Specifications for CHS 110 Hot Standby Included here AppendicesAt a Glance Appendix contains the following chaptersAppendices Com Act Error Patterns Purpose What’s in this Chapter?Number Blinks Code Error CHS 110 Hot Standby Module Error PatternsCHS 110 Error PatternsError 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 Other Tools Suggested Tools includeOther Tools ProWORX Nxt Hot Standby Configuration Extension ProWORX Nxt ConfigurationMenu and select Hsby Extension from the Tree Control Dialog Screen Hot Standby QuaHot Standby Quantum dialog screen FieldFunctions Parameters of a Quantum Hot Standby systemStatus Registers Dialog screen Initial Command RegisterStatus Register Registers dialog screen Offline state Index Numerics Index Automatic, 108 swapping addresses 226