Schneider Electric 840 USE 106 0 guide

Overview of Quantum Hot Standby

Architecture As shown below, Quantum IEC Hot Standby involves:

Concept Version 2.1 or greater

Two High End Quantum Controllers (CPU 434 12 or CPU 534 14)

The existing CHS Modules and Execs (CHS 110 00). The existing RIO Heads

lwith version 2.0 Execs or greater (CRP 93x).

All five IEC 1131 languages can be used, however 984 Ladder Logic cannot be

used.

The following diagram shows the Quantum IEC Hot Standby Architecture

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With Concept 2.1/2.2, changes to the running application are possible only by download changes to the Primary controller, whereby the Standby controller goes offline until it gets updated again by using the UPDATE push button (refer to Updating PLC System Executives in an IEC HSBY System, p. 200). Concept 2.5 supports the Logic Mismatch option on the Hot Standby Configuration Extension which allows the Standby controller to remain online with a different program than the Primary controller.

Note: Unlike Concept 2.1, with Concept 2.2/2.5 it is possible to make changes to the IEC logic offline and download them as online changes later. It is not necessary to be connected to the controller at the time of editing the IEC logic.

840 USE 106 00 January 2003

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Schneider Electric 840 USE 106 0 manual Fiber Optic CHS Link 5HPRWRUJUDWHU

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 a Com Act Error Patterns Specifications for CHS 110 Hot StandbyAppendix C ProWORX Nxt Configuration Appendix B Fiber Optic Cable GuidePage Important Information Safety InformationProcedure Persons Schneider Electric All Rights Reserved Please Note At a Glance About the BookValidity Note Related Documents About the Book Purpose Overview of Quantum Hot StandbyWhat’s in this Chapter? Overview of Quantum Hot Standby Purpose What’s in this Section? 1ControlIntroduction Description Primary and Standby ControlRole of the CHS Hot Standby Cables See Fiber Optic Cable Guide, p Hardware Components in a Quantum Hot Standby System Panel Controls CHS 110 Hot Standby ModuleTopology LED Display Following table shows the five status indicatorsModule 140 CHS 110 Slide Switch KeyswitchUpdate Button Function Modes of Operation 2OperationHsby 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 Architecture HsbyQuantum 984 Hot Standby involves Module Version RIO is serviced differently Upgrade PLC firmwareIEC compliant languages FBD, LD, SFC, IL and ST Hsby system 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 PLC to CHS Data Scan Time Increase table belowTransfer Rate Leads to the following results 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 Customizing Options Alternatives to the default transfer areaCustom State Area Up using multiple scans to transfer all the data Setting upCustom Scans Custom Scans Theory of 984 Hsby Operation Theory of IEC Hsby Operation Definitions IEC Hot Standby DefinitionsFollowing are IEC Hot Standby definitions IEC runtime system Currently used IEC Heap Size and the Maximum IEC Heap Size IEC HeapProgram Data Online -- Memory Statistics IEC Theory How an IEC Hsby System WorksProgram. 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 Primary Guidelines for Planning a Hot Standby SystemControllers Positioning Safety Precautions Electrical Safety Precautions Remote I/O Cable Topologies Single Cable Single Cable ConfigurationConfiguration Dual Cable Standby system Dual Cable ConfigurationStandby PLC Primary PLC How to Install a Hot Standby System InstallationProcedure Installing a Hot Designation Set to B Slide Switches SettingBattery has been disconnected for at least five minutes Damage 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 Controlling Installed into your applicationSystem by CHS Instruction Hot Standby System by Configuration ExtensionExtension System 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 Status Register Hot Standby Status RegisterBits in the Hot Standby Status Register 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 Keyswitch Override Hazard Keyswitch Override and Run ModeRun Override Option Power up the system again. Download the new configurationSoftware Control Example Mismatch Hazard Standby on Logic Mismatches Modbus Plus SwitchoverPort Address Swapping at Transfer All Transfer All State RAMTransferred if this check box is activated Check box Nontransfer Area 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 @1SE V196 @2I7 Concept Loadables Installation Screen@2IE V196 V208 Standby controller executes the logic of segment IEC Logic in a Extensions UsingTransfer from Primary to Standby Loadables are removed from the project automatically Hot Standby Dialog Concept 2.5 shown Activation of HotStandby Dialog Standby Command Register Specifying the Command RegisterSpecify Register is Enable it Hot Standby Command RegisterRange Register. However Control Example Enable Keyswitch OverrideSoftware Option Options forSoftware Control Stage Description Comment Advanced Options Concept Exec Upgrade Without Stopping Application Stopped Cancel Stopping the process System Executive Upgrade Procedure Standby on Logic Mismatch Map / Configuration HazardLogic Mismatch For Concept Logic Project global data that is updated includes Data that do not exist on both controllers is not updatedUpdating Project Global Data Is also Swapping Addresses at Switchover NOE 771 cannot be controlled, it is always activated IP AddressMatter if they reside in the Standby or Primary rack Standby Backplanes State RAM Using a Quantum IEC Hot Standby System Nontransfer Area of State RAM 4nnnnn Supported only with Concept 2.5 or higher Controllers Memory Partition Diagram below shows a PLC 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 Preconditions 5OperationStarting Regardless of its designation as a or B 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 Monitoring Constant InternalRegular Data Transfers Additional Guidelines for IEC Hot Standby Additional Guidelines for IEC Hot Standby General Application Requirements Assessing Memory SavingsExisting IEC Applications 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 IEC Application Efficient UseAnything 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 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 Secondary Mode Primary ModeStandalone Mode Offline Mode CPU is stopped Offline Mode at Power-up Sequence table Effects on IP Address assignment and Ethernet servicesAddress Assignment Services Power-UpEffects on the Ethernet services Ethernet Information AdditionalGoing to Offline IP Address Assignment and Going Offline Connections Service Typical Swap Time Maximum Swap TimeAddress Swap Times Browsers Network Effects of Hot Standby SolutionRemote Connection Request during Hot Standby Swap Hot Standby Swap during Remote Connection Request Scanning ServicePublish Subscribe 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 Troubleshooting Communications ErrorsInterface Errors LEDs Replace the faulty CHS 110 module Board Level ErrorsBoard Level Error 140 CHS 110 10.3 Failures Main Detecting Failures in a Hot Standby SystemComponents Backplane 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 Battery Hazard Changing the Program and Performing a Program UpdateUpdating Standby Ogic Standby controller Off Line Program Change HazardBefore 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 Forcing a Switchover TestingSwitchover Forcing a Manually Take the following steps to force a switchover 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 At a Glance AppendicesIncluded here Appendix contains the following chapters Appendices Purpose What’s in this Chapter? Com Act Error Patterns CHS 110 Error CHS 110 Hot Standby Module Error PatternsNumber 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 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 Functions FieldHot 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