Schneider Electric 840 USE 106 0 instruction

Theory of 984 Ladder Logic HSBY

Operation	2

At a Glance

Purpose	This chapter covers the 984 Hot Standby and its theory of operation.
What’s in this
What’s in this	This chapter contains the following topics:
Chapter?
Chapter?	Topic	Page
	Topic	Page

	How a 984 HSBY System Works	32

	System Scan Time	33

	The State RAM Transfer and Scan Time	36

	Default Transfer Area	38

	Customizing Options	40

	Custom Scans	41

840 USE 106 00 January 2003

31

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Schneider Electric 840 USE 106 0 Theory of 984 Ladder Logic Hsby Operation, This chapter contains the following topics

Contents

USE 106 Quantum Hot StandbyPage Table of Contents Theory of IEC Hsby Operation Using a Quantum 984 Hsby SystemPlanning a Quantum Hot Standby System 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 Procedure Safety InformationImportant Information 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 Introduction 1ControlPurpose What’s in this Section? 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 Topology CHS 110 Hot Standby ModulePanel Controls 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 Ignores your action Run ModePrimary unit fails 3Cabling Cable Fiber Optic CableConnections 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 Primary Rack Scan System Scan TimeSolve Segment 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 Automatic Default Transfer AreaTransfer Primary to the Standby controller on every scan 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 Primary Rack Transfer diagram The following shows a transfer diagramStandby Rack Following result Time Scan Time Increase Table belowIEC Scan Time Increase IEC Scan Time Increase Table See Overall PLC Scan Time, p State Ram Transfer and Scan Time Configured for IEC Hsby Transferred RAM LayoutStandby’s IEC data consistency 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 Configuration Single Cable ConfigurationSingle Cable 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 CHS Configuring 984 HsbyModsoft Instruction Installed into your applicationControlling System by CHS System Configuration ExtensionHot Standby System by Extension CHS Instruction Execute Hsby Unconditionally Enable CommandHsby System Active 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 Zoom Screen Zoom screen of CHS InstructionScreens must be identical to those in the CHS block Standby Status Register Hot Standby Status RegisterStatus Register Bits in the Hot Reverse Transfer Registers Reverse Reverse Transfer Logic ExampleTransfer Logic 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 Software Control Example Power up the system again. Download the new configurationOption 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 Data Type Scan TransfersBegins again, sending the first 512 additional registers 4Operation Preconditions Starting the System Starting Your Hot Standby SystemStep Action RIO Head Ready FaultStandby Backplane Clock Synchronizing Time-of-Day ClocksSynchronization Network 1 of Segment Following diagram shows synchronizing time-of-day clocksNetwork 2 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 Standby Dialog Activation of HotConcept 2.5 shown Register is Specifying the Command RegisterStandby Command Register Specify Register. However Hot Standby Command RegisterEnable it Range Software Enable Keyswitch OverrideControl Example 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 IEC State RAM Memory/Scantime optimizationMap 142 Memory Prediction Screenshot of the Memory Prediction dialog is shown below Statistics MemoryFor IEC Hot Standby data 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 Efficient Use of State RAM Configured StateRAM Registers Data Efficient UseIEC Application Anything else Efficiency Tips RealB RealC RealD Use Constants Instead of Equal LiteralsRealF RealG RealH Use Constants Instead of Open Inputs 160 Programmed Logic Reduce the Use Of Complex Data Structures Solution Ethernet Hot Standby Solution Solution Overview of Hot Standby Solution for NOEsPlease Note Service NOE 771 Drop Hot Standby Topology Device can be assigned the configured IP + 1 address NOE Configuration and Hot StandbyTo download a project to the PLC IP Address Assignment ConfiguringTransparency 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 Address Swap Times Service Typical Swap Time Maximum Swap TimeConnections 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 Or equipment damage SafetyAvoid Damage to Application I/O Devices Errors Startup Errors LEDs Communications ErrorsTroubleshooting Interface Errors Board Level Error 140 CHS 110 Board Level ErrorsReplace the faulty CHS 110 module 10.3 Failures Backplane Detecting Failures in a Hot Standby SystemMain Components Detecting Failures in the Primary Backplane Standby module and RIO head to the chart belowController CHS RIO Head Failure Type Description Controller CHS RIO Head Failure Description Detecting Failures in the Standby Backplane 191 Replacement Replacing a Hot Standby Module ReplacementPrimary Backplane Hazard 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 While Hot Steps to Upgrade Zoom or RDE PLC executivesStandby is Running 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 Specifications for CHS 110 Hot StandbySpecifications for CHS 110 Hot Standby 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 Error Patterns The following table shows error patterns CRP Remote I/O Head Processor Error PatternsNumber Code Error Blinks 212 Fiber Optic Cable Guide Recommen ConnectorsDations Suggested Tools include Other Tools Other Tools ProWORX Nxt Hot Standby Configuration Extension ProWORX Nxt ConfigurationMenu and select Hsby Extension from the Tree Control Hot Standby Qua Dialog Screen Parameters of a Quantum Hot Standby system FieldFunctions Hot Standby Quantum dialog screen Status Registers Dialog screen Initial Command RegisterStatus Register Registers dialog screen Offline state Index Numerics Index Automatic, 108 swapping addresses 226