Health of a Hot Standby System | Schneider Electric 840 USE 106 0

Maintenance

10.1	Health of a Hot Standby System

Introduction

Purpose

What’s in this Section?

This section describes checking the health of a Hot Standby System.

This section contains the following topics:

Topic	Page

Verifying Health of a Hot Standby System	180

Additional Checks	181

840 USE 106 00 January 2003

179

Image 179

Schneider Electric 840 USE 106 0 manual Health of a Hot Standby System, Introduction

Contents

USE 106 Quantum Hot StandbyPage Table of Contents Planning a Quantum Hot Standby System Using a Quantum 984 Hsby SystemTheory of IEC Hsby Operation Additional Guidelines for IEC Hot Standby Using a Quantum IEC Hot Standby System Maintenance Ethernet Hot Standby Solution Appendix B Fiber Optic Cable Guide Specifications for CHS 110 Hot StandbyAppendix a Com Act Error Patterns Appendix C ProWORX Nxt ConfigurationPage Important Information Safety InformationProcedure Persons Schneider Electric All Rights Reserved Please Note Related Documents About the BookAt a Glance Validity Note About the Book Chapter? Overview of Quantum Hot StandbyPurpose What’s in this Overview of Quantum Hot Standby Purpose What’s in this Section? 1ControlIntroduction Hot Standby Primary and Standby ControlDescription Role of the CHS Cables See Fiber Optic Cable Guide, p Hardware Components in a Quantum Hot Standby System Panel Controls CHS 110 Hot Standby ModuleTopology 140 CHS 110 Following table shows the five status indicatorsLED Display Module Function KeyswitchSlide Switch Update Button Operation 2OperationModes of Operation Hsby Modes of Hsby has three Modes of Operation Primary unit fails Run ModeIgnores your action 3Cabling Connections Fiber Optic CableCable CHS 210 Hot Standby Kit Hsby and IEC Hsby Module Version HsbyArchitecture Quantum 984 Hot Standby involves Hsby system Upgrade PLC firmwareRIO is serviced differently IEC compliant languages FBD, LD, SFC, IL and ST Fiber Optic CHS Link 5HPRWRUJUDWHU Overview Standby This chapter contains the following topics Theory of 984 Ladder Logic Hsby Operation How a 984 Hsby System Works Solve Segment Scan System Scan TimePrimary Rack Scan Leads to the following results Scan Time Increase table belowPLC to CHS Data Transfer Rate Scan Time Increase Table in PLC Scan Times, p Example Time State RAM Transfer and Scan Time Theory of 984 Hsby Operation Transfer Primary to the Standby controller on every scan Default Transfer AreaAutomatic Example Area Alternatives to the default transfer areaCustomizing Options Custom State Custom Scans Setting upUp using multiple scans to transfer all the data Custom Scans Theory of 984 Hsby Operation Theory of IEC Hsby Operation IEC runtime system IEC Hot Standby DefinitionsDefinitions Following are IEC Hot Standby definitions Online -- Memory Statistics IEC HeapCurrently used IEC Heap Size and the Maximum IEC Heap Size Program Data State RAM Defined How an IEC Hsby System WorksIEC Theory Program. There are three steps in the transfer process System Scan Time Standby Rack Transfer diagram The following shows a transfer diagramPrimary Rack IEC Scan Time Increase Time Scan Time Increase Table belowFollowing result IEC Scan Time Increase Table See Overall PLC Scan Time, p State Ram Transfer and Scan Time Configured for IEC Hsby Standby’s IEC data consistency LayoutTransferred RAM Theory of IEC Hsby Operation Planning a Quantum Hot Standby System Positioning Guidelines for Planning a Hot Standby SystemPrimary Controllers Safety Precautions Electrical Safety Precautions Remote I/O Cable Topologies Single Cable Single Cable ConfigurationConfiguration Primary PLC Dual Cable ConfigurationDual Cable Standby system Standby PLC Installing a Hot InstallationHow to Install a Hot Standby System Procedure Damage SettingDesignation Set to B Slide Switches Battery has been disconnected for at least five minutes Network Following diagram illustrates the network connections Step Aligning Key Locking Ring Diagram Converting to You need backplanes with at least four slots Adding Hot Using a Quantum 984 Hsby System Using a Quantum 984 Hsby System 1Configuration Modsoft Configuring 984 HsbyCHS Instruction Installed into your applicationControlling System by CHS System Configuration ExtensionHot Standby System by Extension Hsby System Active Execute Hsby Unconditionally Enable CommandCHS Instruction Using the CHS Instruction Block Hot Standby Command Register Hazard Using CHS Instruction Block Command Register Nontransfer Area Within the State RAM Transfer Status Register Elements of the Nontransfer Area CHS module Configuration Screens must be identical to those in the CHS block Zoom screen of CHS InstructionZoom Screen Standby Status Register Hot Standby Status RegisterStatus Register Bits in the Hot Reverse Transfer Registers Transfer Logic Reverse Transfer Logic ExampleReverse Segment 000813 Using a Quantum 984 Hsby System Using Configuration Extension Concept shown Dialog Standby Concept Hot Standby Dialog Commandsystem Register Bits in the Hot Standby Command Register Hot Standby Command Register Hazard Override Keyswitch Override and Run ModeKeyswitch Override Hazard Run Option Power up the system again. Download the new configurationSoftware Control Example Mismatch Hazard Standby on Logic Mismatches Swapping at SwitchoverModbus Plus Port Address Check box Nontransfer Area Transfer All State RAMTransfer All Transferred if this check box is activated Status Register for Configuration extension Hot Standby Status Register for Configuration Extension Advanced Advanced Options Additional RAM State RAM dialog Defining the Transfer Area of State RAM 12K Option Dialog User Defined Option State RAM Transfer Transfer Additional State RAM Hazard Transferring Additional State RAM Data 101 Begins again, sending the first 512 additional registers Scan TransfersData Type 4Operation Step Action Starting Your Hot Standby SystemPreconditions Starting the System Standby Backplane Ready FaultRIO Head Synchronization Synchronizing Time-of-Day ClocksClock Network 2 of Segment Following diagram shows synchronizing time-of-day clocksNetwork 1 of Segment While Your System Is Running This chapter presents operating procedures for the IEC Hsby Using a Quantum IEC Hot Standby System Using 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 V196 Standby controller executes the logic of segment IEC Logic in a Loadables are removed from the project automatically UsingExtensions Transfer from Primary to Standby Hot Standby Dialog Concept 2.5 shown Activation of HotStandby Dialog Register is Specifying the Command RegisterStandby Command Register Specify Register. However Hot Standby Command RegisterEnable it Range Control Example Enable Keyswitch OverrideSoftware Stage Description Comment Options forOption Software Control Advanced Options Concept Exec Upgrade Without Stopping Application Stopped Cancel Stopping the process System Executive Upgrade Procedure For Concept Map / Configuration HazardStandby on Logic Mismatch Logic Mismatch Logic Global Data Data that do not exist on both controllers is not updatedProject global data that is updated includes Updating Project Is also Swapping Addresses at Switchover Standby Backplanes IP AddressNOE 771 cannot be controlled, it is always activated Matter if they reside in the Standby or Primary rack State RAM Using a Quantum IEC Hot Standby System Nontransfer Area of State RAM 4nnnnn Supported only with Concept 2.5 or higher Controllers Shows how the number of IEC Hsby Registers can be modified Diagram below shows a PLC Memory PartitionMemory Partition Registers State RAM Size State RAM Size Section Transfer Control Section Transfer Control FBD Select Component of Type Bool Regardless of its designation as a or B 5OperationPreconditions Starting CHS 110 RIO Head 140 Normal Operation Map Memory/Scantime optimizationIEC State RAM 142 Memory Prediction Screenshot of the Memory Prediction dialog is shown below For IEC Hot Standby data MemoryStatistics Synchronizing Time of Day Clocks Transfers Constant InternalMonitoring Regular Data Additional Guidelines for IEC Hot Standby Additional Guidelines for IEC Hot Standby General Application Requirements Applications Memory SavingsAssessing Existing IEC Memory Following screen shows memory statistics Statistics Memory Statistics 152 Optimization Needed to achieve it IEC Applications RAM Registers Configured StateEfficient Use of State RAM Data Efficient UseIEC Application Anything else Efficiency Tips RealF RealG RealH Use Constants Instead of Equal LiteralsRealB RealC RealD Use Constants Instead of Open Inputs 160 Programmed Logic Reduce the Use Of Complex Data Structures Solution Ethernet Hot Standby Solution Please Note Overview of Hot Standby Solution for NOEsSolution Service NOE 771 Drop Hot Standby Topology To download a project to the PLC NOE Configuration and Hot StandbyDevice can be assigned the configured IP + 1 address Transparency ConfiguringIP Address Assignment Offline Mode CPU is stopped Primary ModeSecondary Mode Standalone Mode Assignment Effects on IP Address assignment and Ethernet servicesOffline Mode at Power-up Sequence table Address Ethernet Power-UpServices Effects on the Ethernet services IP Address Assignment and Going Offline AdditionalInformation Going to Offline Connections Service Typical Swap Time Maximum Swap TimeAddress Swap Times Hot Standby Swap during Remote Connection Request Network Effects of Hot Standby SolutionBrowsers Remote Connection Request during Hot Standby Swap Subscribe ServiceScanning Publish 176 Maintenance Maintenance Health of a Hot Standby System Health Messages Verifying Health of a Hot Standby System Recognizing Additional Checks Avoid Damage to Application I/O Devices SafetyOr equipment damage Errors Startup Errors LEDs Communications ErrorsTroubleshooting Interface Errors Replace the faulty CHS 110 module Board Level ErrorsBoard Level Error 140 CHS 110 10.3 Failures Backplane Detecting Failures in a Hot Standby SystemMain Components Controller CHS RIO Head Failure Type Description Standby module and RIO head to the chart belowDetecting Failures in the Primary Backplane Controller CHS RIO Head Failure Description Detecting Failures in the Standby Backplane 191 Replacement Primary Backplane Hazard ReplacementReplacing a Hot Standby Module Standby Ogic Changing the Program and Performing a Program UpdateBattery Hazard Updating Begin Controller as well Program Change HazardStandby controller Off Line Before You Updating Standby Procedure Amber Standby indicator begins to blink Updating Standby Updating PLC System Executives in a 984 Hsby System Standby is Running Steps to Upgrade Zoom or RDE PLC executivesWhile Hot Updating PLC System Executives in an IEC Hsby System Take the following steps to force a switchover manually TestingForcing a Switchover Switchover Forcing a Manually After Taking the Primary Controller Offline Primary Standby Bringing the Original Primary Unit Back Online Register, p Through Specifications for CHS 110 Hot Standby Specifications for CHS 110 Hot StandbySpecifications Specifications for CHS 110 Hot Standby Appendix contains the following chapters AppendicesAt a Glance Included here Appendices Purpose What’s in this Chapter? Com Act Error Patterns Patterns CHS 110 Hot Standby Module Error PatternsCHS 110 Error Number Blinks Code Error Number Code Error Blinks CRP Remote I/O Head Processor Error PatternsError Patterns The following table shows error patterns 212 Fiber Optic Cable Guide Dations ConnectorsRecommen Suggested Tools include Other Tools Other Tools Menu and select Hsby Extension from the Tree Control ProWORX Nxt ConfigurationProWORX Nxt Hot Standby Configuration Extension Hot Standby Qua Dialog Screen Parameters of a Quantum Hot Standby system FieldFunctions Hot Standby Quantum dialog screen Status Register Initial Command RegisterStatus Registers Dialog screen Registers dialog screen Offline state Index Numerics Index Automatic, 108 swapping addresses 226