Main, Components, Backplane | Schneider Electric 840 USE 106 0

Maintenance

Detecting Failures in a Hot Standby System

Main	If one of the main components of the Primary backplane fails, control shifts to the
Components of	Standby. If a component fails in the Standby backplane, the Standby goes offline.
the Primary	Likewise, if the fiber cable link between the Hot Standby modules fails, the Standby
Backplane	goes offline.
	This section helps you determine which component failed. When you have replaced
	that component, you must cycle power, with one exception. After cycling power, if
	the backplane is now operating, it assumes the Standby role. If the failure was in the
	fiber cable, the backplane may return to Standby mode without cycling power.
	If replacing the component does not solve the problem, call Schneider Electric
	customer support at 1-800-468-5342 for further directions.

188	840 USE 106 00 January 2003

Image 188

Schneider Electric 840 USE 106 0 manual Detecting Failures in a Hot Standby System, Main, Components, Backplane

Contents

Quantum Hot Standby USE 106Page Table of Contents Planning a Quantum Hot Standby System Using a Quantum 984 Hsby SystemTheory of IEC Hsby Operation Using a Quantum IEC Hot Standby System Additional Guidelines for IEC Hot Standby Ethernet Hot Standby Solution Maintenance Specifications for CHS 110 Hot Standby Appendix a Com Act Error PatternsAppendix C ProWORX Nxt Configuration Appendix B Fiber Optic Cable GuidePage Important Information Safety InformationProcedure Please Note Persons Schneider Electric All Rights Reserved About the Book At a GlanceValidity Note Related Documents About the Book Overview of Quantum Hot Standby PurposeWhat’s in this Chapter? Overview of Quantum Hot Standby Purpose What’s in this Section? 1ControlIntroduction Primary and Standby Control DescriptionRole of the CHS Hot Standby Hardware Components in a Quantum Hot Standby System Cables See Fiber Optic Cable Guide, p Panel Controls CHS 110 Hot Standby ModuleTopology Following table shows the five status indicators LED DisplayModule 140 CHS 110 Keyswitch Slide SwitchUpdate Button Function 2Operation Modes of OperationHsby Modes of Hsby has three Modes of Operation Operation Primary unit fails Run ModeIgnores your action 3Cabling Connections Fiber Optic CableCable CHS 210 Hot Standby Kit Hsby and IEC Hsby Hsby ArchitectureQuantum 984 Hot Standby involves Module Version Upgrade PLC firmware RIO is serviced differentlyIEC compliant languages FBD, LD, SFC, IL and ST 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 Solve Segment Scan System Scan TimePrimary Rack Scan Scan Time Increase table below PLC to CHS DataTransfer Rate 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 Transfer Primary to the Standby controller on every scan Default Transfer AreaAutomatic Example Alternatives to the default transfer area Customizing OptionsCustom State Area Setting up Up using multiple scans to transfer all the dataCustom Scans Custom Scans Theory of 984 Hsby Operation Theory of IEC Hsby Operation IEC Hot Standby Definitions DefinitionsFollowing are IEC Hot Standby definitions IEC runtime system IEC Heap Currently used IEC Heap Size and the Maximum IEC Heap SizeProgram Data Online -- Memory Statistics How an IEC Hsby System Works IEC TheoryProgram. There are three steps in the transfer process State RAM Defined 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 Guidelines for Planning a Hot Standby System PrimaryControllers Positioning Electrical Safety Precautions Safety Precautions Remote I/O Cable Topologies Single Cable Single Cable ConfigurationConfiguration Dual Cable Configuration Dual Cable Standby systemStandby PLC Primary PLC Installation How to Install a Hot Standby SystemProcedure Installing a Hot Setting Designation Set to B Slide SwitchesBattery has been disconnected for at least five minutes 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 Modsoft Configuring 984 HsbyCHS Installed into your application ControllingSystem by CHS Instruction Configuration Extension Hot Standby System byExtension System Hsby System Active Execute Hsby Unconditionally Enable CommandCHS Instruction 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 Screens must be identical to those in the CHS block Zoom screen of CHS InstructionZoom Screen Hot Standby Status Register Status RegisterBits in the Hot Standby Status Register Reverse Transfer Registers Transfer Logic Reverse Transfer Logic ExampleReverse 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 Keyswitch Override and Run Mode Keyswitch Override HazardRun Override Option Power up the system again. Download the new configurationSoftware Control Example Standby on Logic Mismatches Mismatch Hazard Switchover Modbus PlusPort Address Swapping at Transfer All State RAM Transfer AllTransferred if this check box is activated 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 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 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 Concept Loadables Installation Screen @1SE V196 @2I7@2IE V196 V208 IEC Logic in a Standby controller executes the logic of segment Using ExtensionsTransfer from Primary to Standby Loadables are removed from the project automatically Hot Standby Dialog Concept 2.5 shown Activation of HotStandby Dialog Specifying the Command Register Standby Command RegisterSpecify Register is Hot Standby Command Register Enable itRange Register. However Control Example Enable Keyswitch OverrideSoftware Options for OptionSoftware Control Stage Description Comment Exec Upgrade Without Stopping Application Stopped Cancel Advanced Options Concept System Executive Upgrade Procedure Stopping the process Map / Configuration Hazard Standby on Logic MismatchLogic Mismatch For Concept Logic Data that do not exist on both controllers is not updated Project global data that is updated includesUpdating Project Global Data Swapping Addresses at Switchover Is also IP Address NOE 771 cannot be controlled, it is always activatedMatter if they reside in the Standby or Primary rack 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 Diagram below shows a PLC Memory Partition Memory PartitionRegisters 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 5Operation PreconditionsStarting Regardless of its designation as a or B 140 CHS 110 RIO Head Normal Operation Map Memory/Scantime optimizationIEC State RAM 142 Screenshot of the Memory Prediction dialog is shown below Memory Prediction For IEC Hot Standby data MemoryStatistics Synchronizing Time of Day Clocks Constant Internal MonitoringRegular Data Transfers Additional Guidelines for IEC Hot Standby Additional Guidelines for IEC Hot Standby General Application Requirements Memory Savings AssessingExisting IEC Applications Memory Statistics Memory Following screen shows memory statistics Statistics 152 Optimization IEC Applications Needed to achieve it RAM Registers Configured StateEfficient Use of State RAM Efficient Use IEC ApplicationAnything else Data 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 Ethernet Hot Standby Solution Solution Please Note Overview of Hot Standby Solution for NOEsSolution Service NOE 771 Hot Standby Topology Drop To download a project to the PLC NOE Configuration and Hot StandbyDevice can be assigned the configured IP + 1 address Transparency ConfiguringIP Address Assignment Primary Mode Secondary ModeStandalone Mode Offline Mode CPU is stopped Effects on IP Address assignment and Ethernet services Offline Mode at Power-up Sequence tableAddress Assignment Power-Up ServicesEffects on the Ethernet services Ethernet Additional InformationGoing to Offline IP Address Assignment and Going Offline Connections Service Typical Swap Time Maximum Swap TimeAddress Swap Times Network Effects of Hot Standby Solution BrowsersRemote Connection Request during Hot Standby Swap Hot Standby Swap during Remote Connection Request Service ScanningPublish Subscribe 176 Maintenance Maintenance Health of a Hot Standby System Verifying Health of a Hot Standby System Health Messages Additional Checks Recognizing Avoid Damage to Application I/O Devices SafetyOr equipment damage Errors Startup Errors Communications Errors TroubleshootingInterface Errors LEDs Replace the faulty CHS 110 module Board Level ErrorsBoard Level Error 140 CHS 110 10.3 Failures Detecting Failures in a Hot Standby System MainComponents Backplane Controller CHS RIO Head Failure Type Description Standby module and RIO head to the chart belowDetecting Failures in the Primary Backplane Detecting Failures in the Standby Backplane Controller CHS RIO Head Failure Description 191 Replacement Primary Backplane Hazard ReplacementReplacing a Hot Standby Module Changing the Program and Performing a Program Update Battery HazardUpdating Standby Ogic Program Change Hazard Standby controller Off LineBefore You Begin Controller as well 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 Testing Forcing a SwitchoverSwitchover Forcing a Manually 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 Specifications for CHS 110 Hot StandbySpecifications Specifications for CHS 110 Hot Standby Appendices At a GlanceIncluded here Appendix contains the following chapters Appendices Com Act Error Patterns Purpose What’s in this Chapter? CHS 110 Hot Standby Module Error Patterns CHS 110 ErrorNumber Blinks Code Error Patterns 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 Other Tools Suggested Tools include Other Tools Menu and select Hsby Extension from the Tree Control ProWORX Nxt ConfigurationProWORX Nxt Hot Standby Configuration Extension Dialog Screen Hot Standby Qua Field FunctionsHot Standby Quantum dialog screen Parameters of a Quantum Hot Standby system Status Register Initial Command RegisterStatus Registers Dialog screen Registers dialog screen Offline state Index Numerics Index Automatic, 108 swapping addresses 226