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Schneider Electric 840 USE 106 0 manual Memory Partition, Optimization

Models: 840 USE 106 0

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Additional Guidelines for IEC Hot Standby

Memory Partition

Memory Partition The following screen shows a PLC Memory Partition.

Concept shown

IEC Applications Optimization of IEC Hot Standby applications concentrates on two issues:

Optimization

Very efficient use of state RAM for purposes other than IEC HSBY Registers (See

l#1, following)

Very efficient use of IEC application data (See #2, following)

840 USE 106 00 January 2003

153

Image 153

Schneider Electric 840 USE 106 0 manual Memory Partition, Optimization

Contents

USE 106 Quantum Hot StandbyPage Table of Contents Using a Quantum 984 Hsby System Theory of IEC Hsby OperationPlanning a Quantum Hot Standby System Additional Guidelines for IEC Hot Standby Using a Quantum IEC Hot Standby SystemMaintenance Ethernet Hot Standby SolutionAppendix a Com Act Error Patterns Specifications for CHS 110 Hot StandbyAppendix C ProWORX Nxt Configuration Appendix B Fiber Optic Cable GuidePage Safety Information ProcedureImportant Information Persons Schneider Electric All Rights Reserved Please NoteAt a Glance About the BookValidity Note Related DocumentsAbout the Book Purpose Overview of Quantum Hot StandbyWhat’s in this Chapter?Overview of Quantum Hot Standby 1Control IntroductionPurpose What’s in this Section? Description Primary and Standby ControlRole of the CHS Hot StandbyCables See Fiber Optic Cable Guide, p Hardware Components in a Quantum Hot Standby SystemCHS 110 Hot Standby Module TopologyPanel Controls LED Display Following table shows the five status indicatorsModule 140 CHS 110Slide Switch KeyswitchUpdate Button FunctionModes of Operation 2OperationHsby Modes of Hsby has three Modes of Operation OperationRun Mode Ignores your actionPrimary unit fails 3Cabling Fiber Optic Cable CableConnections CHS 210 Hot Standby Kit Hsby and IEC Hsby Architecture HsbyQuantum 984 Hot Standby involves Module VersionRIO is serviced differently Upgrade PLC firmwareIEC compliant languages FBD, LD, SFC, IL and ST Hsby systemFiber Optic CHS Link 5HPRWRUJUDWHU Overview StandbyThis chapter contains the following topics Theory of 984 Ladder Logic Hsby OperationHow a 984 Hsby System Works System Scan Time Primary Rack ScanSolve Segment Scan PLC to CHS Data Scan Time Increase table belowTransfer Rate Leads to the following resultsScan Time Increase Table in PLC Scan Times, p ExampleTime State RAM Transfer and Scan TimeTheory of 984 Hsby Operation Default Transfer Area AutomaticTransfer Primary to the Standby controller on every scan Example Customizing Options Alternatives to the default transfer areaCustom State AreaUp using multiple scans to transfer all the data Setting upCustom Scans Custom ScansTheory of 984 Hsby Operation Theory of IEC Hsby Operation Definitions IEC Hot Standby DefinitionsFollowing are IEC Hot Standby definitions IEC runtime systemCurrently used IEC Heap Size and the Maximum IEC Heap Size IEC HeapProgram Data Online -- Memory StatisticsIEC Theory How an IEC Hsby System WorksProgram. There are three steps in the transfer process State RAM DefinedSystem Scan Time Transfer diagram The following shows a transfer diagram Primary RackStandby Rack Time Scan Time Increase Table below Following resultIEC Scan Time Increase IEC Scan Time Increase Table See Overall PLC Scan Time, p State Ram Transfer and Scan Time Configured for IEC Hsby Layout Transferred RAMStandby’s IEC data consistency Theory of IEC Hsby Operation Planning a Quantum Hot Standby System Primary Guidelines for Planning a Hot Standby SystemControllers PositioningSafety Precautions Electrical Safety PrecautionsRemote I/O Cable Topologies Single Cable Configuration ConfigurationSingle Cable Dual Cable Standby system Dual Cable ConfigurationStandby PLC Primary PLCHow to Install a Hot Standby System InstallationProcedure Installing a HotDesignation Set to B Slide Switches SettingBattery has been disconnected for at least five minutes DamageNetwork 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 Configuring 984 Hsby CHSModsoft Controlling Installed into your applicationSystem by CHS InstructionHot Standby System by Configuration ExtensionExtension SystemExecute Hsby Unconditionally Enable Command CHS InstructionHsby 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 of CHS Instruction Zoom ScreenScreens must be identical to those in the CHS block Status Register Hot Standby Status RegisterBits in the Hot Standby Status RegisterReverse Transfer Registers Reverse Transfer Logic Example ReverseTransfer 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 Keyswitch Override Hazard Keyswitch Override and Run ModeRun OverridePower up the system again. Download the new configuration Software Control ExampleOption Mismatch Hazard Standby on Logic MismatchesModbus Plus SwitchoverPort Address Swapping atTransfer All Transfer All State RAMTransferred if this check box is activated Check box Nontransfer AreaStatus 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 Scan Transfers Data TypeBegins again, sending the first 512 additional registers 4Operation Starting Your Hot Standby System Preconditions Starting the SystemStep Action Ready Fault RIO HeadStandby Backplane Synchronizing Time-of-Day Clocks ClockSynchronization Following diagram shows synchronizing time-of-day clocks Network 1 of SegmentNetwork 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 @1SE V196 @2I7 Concept Loadables Installation Screen@2IE V196 V208Standby controller executes the logic of segment IEC Logic in aExtensions UsingTransfer from Primary to Standby Loadables are removed from the project automaticallyHot Standby Dialog Activation of Hot Standby DialogConcept 2.5 shown Standby Command Register Specifying the Command RegisterSpecify Register isEnable it Hot Standby Command RegisterRange Register. HoweverEnable Keyswitch Override SoftwareControl Example Option Options forSoftware Control Stage Description CommentAdvanced Options Concept Exec Upgrade Without Stopping Application Stopped CancelStopping the process System Executive Upgrade ProcedureStandby on Logic Mismatch Map / Configuration HazardLogic Mismatch For ConceptLogic Project global data that is updated includes Data that do not exist on both controllers is not updatedUpdating Project Global DataIs also Swapping Addresses at SwitchoverNOE 771 cannot be controlled, it is always activated IP AddressMatter if they reside in the Standby or Primary rack Standby BackplanesState RAM Using a Quantum IEC Hot Standby SystemNontransfer Area of State RAM 4nnnnn Supported only with Concept 2.5 or higher ControllersMemory Partition Diagram below shows a PLC Memory PartitionRegisters 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 Preconditions 5OperationStarting Regardless of its designation as a or BCHS 110 RIO Head 140Normal Operation Memory/Scantime optimization IEC State RAMMap 142 Memory Prediction Screenshot of the Memory Prediction dialog is shown belowMemory StatisticsFor IEC Hot Standby data Synchronizing Time of Day Clocks Monitoring Constant InternalRegular Data TransfersAdditional Guidelines for IEC Hot Standby Additional Guidelines for IEC Hot Standby General Application Requirements Assessing Memory SavingsExisting IEC ApplicationsMemory Following screen shows memory statistics Statistics Memory Statistics152 Optimization Needed to achieve it IEC ApplicationsConfigured State Efficient Use of State RAMRAM Registers IEC Application Efficient UseAnything else DataEfficiency Tips Use Constants Instead of Equal Literals RealB RealC RealDRealF RealG RealH Use Constants Instead of Open Inputs 160 Programmed Logic Reduce the Use Of Complex Data Structures Solution Ethernet Hot Standby SolutionOverview of Hot Standby Solution for NOEs SolutionPlease Note Service NOE 771 Drop Hot Standby TopologyNOE Configuration and Hot Standby Device can be assigned the configured IP + 1 addressTo download a project to the PLC Configuring IP Address AssignmentTransparency Secondary Mode Primary ModeStandalone Mode Offline Mode CPU is stoppedOffline Mode at Power-up Sequence table Effects on IP Address assignment and Ethernet servicesAddress AssignmentServices Power-UpEffects on the Ethernet services EthernetInformation AdditionalGoing to Offline IP Address Assignment and Going OfflineService Typical Swap Time Maximum Swap Time Address Swap TimesConnections Browsers Network Effects of Hot Standby SolutionRemote Connection Request during Hot Standby Swap Hot Standby Swap during Remote Connection RequestScanning ServicePublish Subscribe176 Maintenance Maintenance Health of a Hot Standby System Health Messages Verifying Health of a Hot Standby SystemRecognizing Additional ChecksSafety Or equipment damageAvoid Damage to Application I/O Devices Errors Startup Errors Troubleshooting Communications ErrorsInterface Errors LEDsBoard Level Errors Board Level Error 140 CHS 110Replace the faulty CHS 110 module 10.3 Failures Main Detecting Failures in a Hot Standby SystemComponents BackplaneStandby module and RIO head to the chart below Detecting Failures in the Primary BackplaneController CHS RIO Head Failure Type Description Controller CHS RIO Head Failure Description Detecting Failures in the Standby Backplane191 Replacement Replacement Replacing a Hot Standby ModulePrimary Backplane Hazard Battery Hazard Changing the Program and Performing a Program UpdateUpdating Standby OgicStandby controller Off Line Program Change HazardBefore You Begin Controller as wellUpdating Standby Procedure Amber Standby indicator begins to blink Updating Standby Updating PLC System Executives in a 984 Hsby System Steps to Upgrade Zoom or RDE PLC executives While HotStandby is Running Updating PLC System Executives in an IEC Hsby System Forcing a Switchover TestingSwitchover Forcing a Manually Take the following steps to force a switchover manuallyAfter Taking the Primary Controller Offline Primary StandbyBringing the Original Primary Unit Back Online Register, p ThroughSpecifications for CHS 110 Hot Standby SpecificationsSpecifications for CHS 110 Hot Standby Specifications for CHS 110 Hot Standby At a Glance AppendicesIncluded here Appendix contains the following chaptersAppendices Purpose What’s in this Chapter? Com Act Error PatternsCHS 110 Error CHS 110 Hot Standby Module Error PatternsNumber Blinks Code Error PatternsCRP Remote I/O Head Processor Error Patterns Error Patterns The following table shows error patternsNumber Code Error Blinks 212 Fiber Optic Cable Guide Connectors RecommenDations Suggested Tools include Other ToolsOther Tools ProWORX Nxt Configuration ProWORX Nxt Hot Standby Configuration ExtensionMenu and select Hsby Extension from the Tree Control Hot Standby Qua Dialog ScreenFunctions FieldHot Standby Quantum dialog screen Parameters of a Quantum Hot Standby systemInitial Command Register Status Registers Dialog screenStatus Register Registers dialog screen Offline state Index Numerics Index Automatic, 108 swapping addresses 226