Program Change Hazard | Schneider Electric 840 USE 106 0 manual

Maintenance

	CAUTION
	Program Change Hazard
	To change the program, you must stop both controllers and take the
	Standby controller Off Line.
	Failure to follow this precaution can result in injury or equipment
	damage.
Before You	To download a new program to your Primary controller, you must stop the Standby
Begin:	controller as well.

The Standby CHS 110 module must be in Off Line mode. Make any changes to the program. Then follow the steps below to copy the new program to the Standby controller.

840 USE 106 00 January 2003

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Image 195

Schneider Electric 840 USE 106 0 Program Change Hazard, Standby controller Off Line, Before You, Begin Controller as well

Contents

USE 106 Quantum Hot StandbyPage Table of Contents Using a Quantum 984 Hsby System Theory of IEC Hsby OperationPlanning 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 Safety Information ProcedureImportant 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 1Control IntroductionPurpose 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 CHS 110 Hot Standby Module TopologyPanel 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 Run Mode Ignores your actionPrimary unit fails 3Cabling Fiber Optic Cable 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 System Scan Time Primary Rack ScanSolve 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 Default Transfer Area AutomaticTransfer 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 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 Positioning Guidelines for Planning a Hot Standby SystemPrimary Controllers Safety Precautions Electrical Safety Precautions Remote I/O Cable Topologies Single Cable Configuration 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 Configuring 984 Hsby CHSModsoft Instruction Installed into your applicationControlling System by CHS System Configuration ExtensionHot Standby System by Extension Execute Hsby Unconditionally Enable Command CHS InstructionHsby 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 of CHS Instruction Zoom ScreenScreens 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 Transfer Logic Example ReverseTransfer 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 Power up the system again. Download the new configuration Software Control ExampleOption 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 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 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 Activation of Hot Standby DialogConcept 2.5 shown Register is Specifying the Command RegisterStandby Command Register Specify Register. However Hot Standby Command RegisterEnable it Range Enable Keyswitch Override SoftwareControl 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 Memory/Scantime optimization IEC State RAMMap 142 Memory Prediction Screenshot of the Memory Prediction dialog is shown below Memory StatisticsFor 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 Configured State Efficient Use of State RAMRAM Registers Data Efficient UseIEC Application Anything else 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 Solution Ethernet Hot Standby Solution Overview of Hot Standby Solution for NOEs SolutionPlease Note Service NOE 771 Drop Hot Standby Topology NOE Configuration and Hot Standby Device can be assigned the configured IP + 1 addressTo download a project to the PLC Configuring IP Address AssignmentTransparency 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 Service Typical Swap Time Maximum Swap Time Address Swap TimesConnections 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 Safety Or equipment damageAvoid Damage to Application I/O Devices Errors Startup Errors LEDs Communications ErrorsTroubleshooting Interface Errors Board Level Errors Board Level Error 140 CHS 110Replace the faulty CHS 110 module 10.3 Failures Backplane Detecting Failures in a Hot Standby SystemMain Components Standby module and RIO head to the chart below Detecting Failures in the Primary BackplaneController CHS RIO Head Failure Type Description Controller CHS RIO Head Failure Description Detecting Failures in the Standby Backplane 191 Replacement Replacement Replacing a Hot Standby ModulePrimary 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 Steps to Upgrade Zoom or RDE PLC executives While HotStandby 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 for CHS 110 Hot Standby SpecificationsSpecifications 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 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 Suggested Tools include Other Tools Other Tools ProWORX Nxt Configuration ProWORX Nxt Hot Standby Configuration ExtensionMenu 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 Initial Command Register Status Registers Dialog screenStatus Register Registers dialog screen Offline state Index Numerics Index Automatic, 108 swapping addresses 226