Theory of IEC Hsby Operation | Schneider Electric 840 USE 106 0

Theory of IEC HSBY Operation

54	840 USE 106 00 January 2003

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Schneider Electric 840 USE 106 0 manual Theory of IEC Hsby Operation

Contents

Quantum Hot Standby USE 106Page Table of Contents Using a Quantum 984 Hsby System Theory of IEC Hsby OperationPlanning a Quantum Hot Standby System Using a Quantum IEC Hot Standby System Additional Guidelines for IEC Hot Standby Ethernet Hot Standby Solution Maintenance Appendix C ProWORX Nxt Configuration Specifications for CHS 110 Hot StandbyAppendix a Com Act Error Patterns Appendix B Fiber Optic Cable GuidePage Safety Information ProcedureImportant Information Please Note Persons Schneider Electric All Rights Reserved Validity Note About the BookAt a Glance Related Documents About the Book What’s in this Overview of Quantum Hot StandbyPurpose Chapter? Overview of Quantum Hot Standby 1Control IntroductionPurpose What’s in this Section? Role of the CHS Primary and Standby ControlDescription Hot Standby Hardware Components in a Quantum Hot Standby System Cables See Fiber Optic Cable Guide, p CHS 110 Hot Standby Module TopologyPanel Controls Module Following table shows the five status indicatorsLED Display 140 CHS 110 Update Button KeyswitchSlide Switch Function Hsby Modes of Hsby has three Modes of Operation 2OperationModes of Operation Operation Run Mode Ignores your actionPrimary unit fails 3Cabling Fiber Optic Cable CableConnections CHS 210 Hot Standby Kit Hsby and IEC Hsby Quantum 984 Hot Standby involves HsbyArchitecture Module Version IEC compliant languages FBD, LD, SFC, IL and ST Upgrade PLC firmwareRIO is serviced differently Hsby system Fiber Optic CHS Link 5HPRWRUJUDWHU Standby Overview Theory of 984 Ladder Logic Hsby Operation This chapter contains the following topics How a 984 Hsby System Works System Scan Time Primary Rack ScanSolve Segment Scan Transfer Rate Scan Time Increase table belowPLC to CHS Data Leads to the following results Example Scan Time Increase Table in PLC Scan Times, p State RAM Transfer and Scan Time Time Theory of 984 Hsby Operation Default Transfer Area AutomaticTransfer Primary to the Standby controller on every scan Example Custom State Alternatives to the default transfer areaCustomizing Options Area Custom Scans Setting upUp using multiple scans to transfer all the data Custom Scans Theory of 984 Hsby Operation Theory of IEC Hsby Operation Following are IEC Hot Standby definitions IEC Hot Standby DefinitionsDefinitions IEC runtime system Program Data IEC HeapCurrently used IEC Heap Size and the Maximum IEC Heap Size Online -- Memory Statistics Program. There are three steps in the transfer process How an IEC Hsby System WorksIEC Theory State RAM Defined System 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 Controllers Guidelines for Planning a Hot Standby SystemPrimary Positioning Electrical Safety Precautions Safety Precautions Remote I/O Cable Topologies Single Cable Configuration ConfigurationSingle Cable Standby PLC Dual Cable ConfigurationDual Cable Standby system Primary PLC Procedure InstallationHow to Install a Hot Standby System Installing a Hot Battery has been disconnected for at least five minutes SettingDesignation Set to B Slide Switches Damage Following diagram illustrates the network connections Network Step Diagram Aligning Key Locking Ring Adding Hot Converting to You need backplanes with at least four slots Using a Quantum 984 Hsby System Using a Quantum 984 Hsby System 1Configuration Configuring 984 Hsby CHSModsoft System by CHS Installed into your applicationControlling Instruction Extension Configuration ExtensionHot Standby System by System Execute Hsby Unconditionally Enable Command CHS InstructionHsby System Active Using the CHS Instruction Block Using CHS Instruction Block Hot Standby Command Register Hazard Command Register Nontransfer Area Within the State RAM Transfer Elements of the Nontransfer Area Status Register Configuration CHS module Zoom screen of CHS Instruction Zoom ScreenScreens must be identical to those in the CHS block Bits in the Hot Hot Standby Status RegisterStatus Register Standby Status Register Reverse Transfer Registers Reverse Transfer Logic Example ReverseTransfer Logic Segment 000813 Using Configuration Extension Using a Quantum 984 Hsby System Concept shown Hot Standby Dialog Dialog Standby Concept Bits in the Hot Standby Command Register Commandsystem Register Hot Standby Command Register Hazard Run Keyswitch Override and Run ModeKeyswitch Override Hazard Override Power up the system again. Download the new configuration Software Control ExampleOption Standby on Logic Mismatches Mismatch Hazard Port Address SwitchoverModbus Plus Swapping at Transferred if this check box is activated Transfer All State RAMTransfer All Check box Nontransfer Area Hot Standby Status Register for Configuration Extension Status Register for Configuration extension Advanced Options Advanced Defining the Transfer Area of State RAM Additional RAM State RAM dialog Dialog 12K Option User Defined Option State RAM Transfer Transferring Additional State RAM Data Transfer Additional State RAM Hazard 101 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 Using a Quantum IEC Hot Standby System This chapter presents operating procedures for the IEC Hsby Using 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 V208 IEC Logic in a Standby controller executes the logic of segment Transfer from Primary to Standby UsingExtensions Loadables are removed from the project automatically Hot Standby Dialog Activation of Hot Standby DialogConcept 2.5 shown Specify Specifying the Command RegisterStandby Command Register Register is Range Hot Standby Command RegisterEnable it Register. However Enable Keyswitch Override SoftwareControl Example Software Control Options forOption Stage Description Comment Exec Upgrade Without Stopping Application Stopped Cancel Advanced Options Concept System Executive Upgrade Procedure Stopping the process Logic Mismatch Map / Configuration HazardStandby on Logic Mismatch For Concept Logic Updating Project Data that do not exist on both controllers is not updatedProject global data that is updated includes Global Data Swapping Addresses at Switchover Is also Matter if they reside in the Standby or Primary rack IP AddressNOE 771 cannot be controlled, it is always activated Standby Backplanes Using a Quantum IEC Hot Standby System State RAM Nontransfer Area of State RAM 4nnnnn Controllers Supported only with Concept 2.5 or higher Registers Diagram below shows a PLC Memory PartitionMemory Partition Shows how the number of IEC Hsby Registers can be modified State RAM Size State RAM Size Section Transfer Control Section Transfer Control FBD Select Component of Type Bool Starting 5OperationPreconditions Regardless of its designation as a or B 140 CHS 110 RIO Head Normal Operation Memory/Scantime optimization IEC State RAMMap 142 Screenshot of the Memory Prediction dialog is shown below Memory Prediction Memory StatisticsFor IEC Hot Standby data Synchronizing Time of Day Clocks Regular Data Constant InternalMonitoring Transfers Additional Guidelines for IEC Hot Standby Additional Guidelines for IEC Hot Standby General Application Requirements Existing IEC Memory SavingsAssessing Applications Memory Statistics Memory Following screen shows memory statistics Statistics 152 Optimization IEC Applications Needed to achieve it Configured State Efficient Use of State RAMRAM Registers Anything else Efficient UseIEC Application Data Efficiency 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 Ethernet Hot Standby Solution Solution Overview of Hot Standby Solution for NOEs SolutionPlease Note Service NOE 771 Hot Standby Topology Drop NOE Configuration and Hot Standby Device can be assigned the configured IP + 1 addressTo download a project to the PLC Configuring IP Address AssignmentTransparency Standalone Mode Primary ModeSecondary Mode Offline Mode CPU is stopped Address Effects on IP Address assignment and Ethernet servicesOffline Mode at Power-up Sequence table Assignment Effects on the Ethernet services Power-UpServices Ethernet Going to Offline AdditionalInformation IP Address Assignment and Going Offline Service Typical Swap Time Maximum Swap Time Address Swap TimesConnections Remote Connection Request during Hot Standby Swap Network Effects of Hot Standby SolutionBrowsers Hot Standby Swap during Remote Connection Request Publish ServiceScanning Subscribe 176 Maintenance Maintenance Health of a Hot Standby System Verifying Health of a Hot Standby System Health Messages Additional Checks Recognizing Safety Or equipment damageAvoid Damage to Application I/O Devices Errors Startup Errors Interface Errors Communications ErrorsTroubleshooting LEDs Board Level Errors Board Level Error 140 CHS 110Replace the faulty CHS 110 module 10.3 Failures Components Detecting Failures in a Hot Standby SystemMain Backplane Standby module and RIO head to the chart below Detecting Failures in the Primary BackplaneController CHS RIO Head Failure Type Description Detecting Failures in the Standby Backplane Controller CHS RIO Head Failure Description 191 Replacement Replacement Replacing a Hot Standby ModulePrimary Backplane Hazard Updating Changing the Program and Performing a Program UpdateBattery Hazard Standby Ogic Before You Program Change HazardStandby controller Off Line Begin Controller as well Updating 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 Switchover Forcing a Manually TestingForcing a Switchover Take the following steps to force a switchover manually Primary Standby After Taking the Primary Controller Offline Bringing the Original Primary Unit Back Online Through Register, p Specifications for CHS 110 Hot Standby SpecificationsSpecifications for CHS 110 Hot Standby Specifications for CHS 110 Hot Standby Included here AppendicesAt a Glance Appendix contains the following chapters Appendices Com Act Error Patterns Purpose What’s in this Chapter? Number Blinks Code Error CHS 110 Hot Standby Module Error PatternsCHS 110 Error Patterns CRP 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 Other Tools Suggested Tools include Other Tools ProWORX Nxt Configuration ProWORX Nxt Hot Standby Configuration ExtensionMenu and select Hsby Extension from the Tree Control Dialog Screen Hot Standby Qua Hot Standby Quantum dialog screen FieldFunctions Parameters of a Quantum Hot Standby system Initial Command Register Status Registers Dialog screenStatus Register Registers dialog screen Offline state Index Numerics Index Automatic, 108 swapping addresses 226