CPU Sweep in a GMR System, PLC Operation | GE GFK-0787B specs

4

CPU Sweep in a GMR System

The special functions required for Genius Modular Redundancy include autotest, input voting, and alarming. These GMR functions are provided by a set of Program Blocks that are placed into the Program Folder using the LM90 librarian feature. After this is done, the GMR logic is executed automatically by the CPU as shown below.

Start of Sweep

Housekeeping

Input Scan

GMR functions

Application Program

GMR functions

Output Scan

Additional CPU Tasks

PLC Operation

Each PLC in the GMR system receives the input state from each connected block on each PLC sweep.

The GMR software performs any input voting required for both discrete and analog inputs and provides voted input data to the PLC. It notes any data discrepancies and provides fault bits and fault messages that can be accessed by application program.

As always, the application program determines the required state of the outputs as a function of the inputs received. The application program sets a single output bit for each device to be controlled. The appropriate number of redundant Genius blocks are configured to identical output references.

The CPUs monitor the voted output state computed by each Genius output block group and provide diagnostic information on the detection of any output discrepancy and identifies the discrepant PLC.

The executive path in each processor (field input to field output) is independent of any inter-processor data exchange, with the exception of initialization data at powerup.

GFK-0787B

Chapter 4 PLC Subsystem

4-5

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GE GFK-0787B user manual CPU Sweep in a GMR System, PLC Operation

Contents

GE Fanuc Automation GFL±002 Preface Related Publications Preface Contents Chapter Configuration Appendix a TÜV Certification Appendix B Maintenance Override Chapter Introduction Components of a GMR System Inter-processor Communications Series 90-70 PLCs Additional Bus Controllers for Communications Busses and Bus Controllers Operation Overview PLC Subsystem Voting on Input Data Input Subsystem Output Subsystem PLC Subsystem Providing Output DataAutomatic System Test Block Summary Genius I/O BlocksDiscrete Blocks Analog, RTD, and Thermocouple Blocks 798 Number of I/O Points in a GMR SystemNumber of Non-GMR I/O Available for the 788 CPU Number of Non-GMR I/O Available for the 789 CPU GMR Configuration and Programming Basic Steps of Configuration and Programming Chapter Input Subsystem Overview One sensor to one Genius input GMR Input Groups Inputs from single-block simplex GMR input groups Non-Voted I/O in the Input SubsystemInputs from non-GMR I/O blocks Discrepancy Reporting for GMR Inputs Discrete InputsTypes of Blocks in the Input Subsystem Discrete Input Processing Calculating Voltage Drops on Tristate Inputs Input Autotest for GMR Inputs Input Filter Time Line Monitoring for Discrete InputsNormally-closed Inputs Normally-open Inputs Manual Input Controls Analog Voting Adaptation Analog InputsVoted Analog Inputs Number of Input Sensors per Voted Channel Non-Voted Analog Inputs in GMR Input Groups Analog Discrepancy ReportingNon-GMR Analog Blocks Chapter Output Subsystem Types of Blocks in the Output Subsystem GMR Output Handling Duplex Default for OutputsOutput Voting Results of Block Group Voting with Three PLCs Online PLC Logon Control Output Fault Reporting Output Load Sharing Block Output Groups Operation of a 4-Block Output Group Electrical Characteristics of Sink and Source BlocksBus Redundancy in a 4-Block Output Group Manual Output Controls and Diagnostics Redundancy Modes for Output Blocks GMR Mode Basic Hot Standby Mode Operation Hot Standby ModeHot Standby Mode in a GMR System Chapter PLC Subsystem All GMR bus controllers at serial bus address System Startup Online Changes Data Initialization PLC Operation CPU Sweep in a GMR System Sweep Time Contribution of Genius I/O and GBCs Estimating CPU Sweep TimeImportant Note Discrepancies Input ProcessingDiscrete Inputs Discrete Input Voting Voting with Three Discrete Inputs Voting with Two Discrete Inputs Voting for One Discrete Input Analog Inputs Analog Input Voting Voting for Three Analog Inputs Voting for Two Analog Inputs Voting for One Analog Input Discrete Outputs Output Processing Synchronous or Asynchronous Input Autotest and I/O Shutdown Shutdown Programming for I/O Shutdown Output Faults that Cause I/O ShutdownM12244 ± Iosd Any I/O Shutdown Timer Activated M12265 ± Sdcan Cancel I/O Shutdown Hours Shut Down Prevention Shut Down Recovery Communications Between PLCs Entering, Clearing, or Setting Global DataGlobal Data Redundancy Programming for Diagnostics Chapter Diagnostics Input Diagnostics Diagnostics in a GMR SystemOutput Diagnostics Summary Table Setting Up Blocks to Report Genius FaultsSetting Up Other Blocks to Send Multiple Fault Reports CPU Redundancy Mode Configuration Block Type Autotest Sequence GMR Autotesting Setup for Input Autotest Configuration Required for Discrete Input AutotestDiscrete Input Autotest Circuit Fail Mask Operation of the Input Autotest Discrete Output Autotest Operation of the Discrete Output Autotest Block a Pulse-tested Pulse Test Operation Voted Discrepancy Inputs GMR Discrepancy ReportingDiscrete Input Discrepancy Reporting Input Data How Output Discrepancy Checking is Performed Discrete Output Discrepancy ReportingDiscrete Output Discrepancy Reporting with Dynamic Outputs Analog Input Discrepancy Reporting Input Line Fault Detection in a GMR Application Clearing the Fault Tables in a GMR System PLC and I/O Fault Tables in a GMR System Reporting of No-Load Faults on 4-Block Output Groups Fault Table Messages for GMR Fault Specific Data Fault Description Code Hex MeaningFault Type for Output Autotest Code PLC Fault Table Messages for GMRMessage Code Code 10903 Code Manual Output Controls and Diagnostics Monitoring Manual Output Controls Discrete Input Fault Contacts for GMR Fault, No Fault, and Alarm Contacts Contact References Associated with an Output Discrete Output Fault Contacts for GMR ShortCircuitfault Overtemperaturefault Overloadfault Fault Contacts for Analog Outputs Analog Fault and Alarm Contacts for GMRAlarm Contacts Fault Contacts for Analog Inputs Chapter Configuration Basic Steps of Configuration Configuration Overview For Information to be copied set only Configuration to yes GMR Configuration Software Revision and Checksum Using the GMR Configuration Software Getting Started Installing the Configuration Software Using a Mouse Mouse and Keyboard Guide for the Configuration Software Configuration GMR Configuration Summary Insert the first GBC bus controller group Creating/Selecting a File Opening a Previously-Saved Configuration File Saving a Configuration File Changing to Another Directory Closing a Configuration File without Saving It Closing and Deleting the System Configuration File Starting a New ConfigurationEntering a System Description When you select System, the following menu appears GMR Configuration Selections Simplex CPU ConfigurationShutdown Period Test Interval Input Discrepancy Filter Limits + %R data needed for the application Spare Initialization DataGlobal Data GBC1 GBC2 Initialize Data Parame Comment Ters M12232 Fault ActionsM12234 Write Access Adding Bus Controllers and I/O Modules Genius Bus Controller Group Configuration Exiting the Window Select To Configure Configuring the Input Subsystem for a Bus Controller GroupExiting a Block Group Window SBA Start %I Auto Test GFK-0787B Duplex State GFK-0787B Analog I/O Group Configuration Vote Adaptation Vote Adapt Mode Default State Analog Discrepancy Thresholds and Limits Start %Q Configuring the Output Subsystem for a Bus Controller Group GFK-0787B Options Bus C inputs Reserved inputs Start Ref Configuration References are 0001 to Creating the GMR10 Output File CONFIG4 Printing the GMR Configuration Configuring Bus Controllers Completing the Logicmaster 90 Configuration Creating and Copying the PLC Configuration Logicmaster Configuration Summary GFK-0787B Configuring GMR Bus Controllers and I/O Blocks Editing the Reference Addresses Configuring Genius I/O BlocksCopying Configurations Setting Up Blocks for Fault Reporting Serial bus Configuring 16-Circuit and 32-Circuit Discrete DC BlocksFeature Circuit or Factory Selections Block Setting Device Block I/O Type Baud Rate Pulse Test Input Filter Time Circuit I/O Type Report Faults Configuration Duplex Output Default State Setting Block Duplex Default Results of Block Voting with Only Two PLCs Online Duplex Voted Output Default State Setting Block Chapter Programming Overview Use of Do I/O and Suspend I/O Program Instruction Set for GMREstimating Memory Usage Estimating Bus Scan Time Reserved References Memor y Write AccessReferences Reserved For Discrete I/O Addressing Input and Output Addressing for GMR I1009 to %I1024 Q1009 to %Q10241024 ± 16 ± 3 x 32 +1 = 913 = %I0913 Analog I/O Addressing Example AnalogOutput Addressing16 x 6 = 96 words required Memory Required for Startup Initialization Data Register %R Memory Assignment for GMR System Status %S References Monitoring the Fault TablesMonitoring Forces and Overrides Status References GMR Status and Control %M References PLC OK Flags Resetting Status Flags M12257 Continue Control ReferencesReference Nickname Description Meaning 40-characterConfiguration File Description Clearing the PLC Fault TablesM12262 Report Programming for Startup Enabling Outputs At Startup Monitoring Startup Status Performing I/O Fault Reset Powerup Note Routines that are appropriate for Application Fault. If both are not 1, initialization continuesExample Ladder Logic These Program Blocks represent logic Triplex bit is optional the need for this bit depends on When a third PLC comes on line Enabling I/O Point Faults Point FaultsProgramming for I/O Shutdown Fault-Locating References Programming for Fault and Alarm ContactsFault and No Fault Contacts Clearing Faults Associated with Fault/No Fault Contacts Discrete Output Fault Contacts for GMR Discrete Input Fault Contacts for GMR Analog Alarm Contacts for GMR Analog Fault Contacts for GMR Parameters for the Call Function Reading GMR DiagnosticsY3 dummy not used Range for End Value Data Table NumbersContains Range for Start Value Code Meaning Error Codes for GMR Diagnostics Global Data for the Application Program Programming for Global Data GFK-0787B Select F6 Add Element to Library Adding GMR10 to the Logicmaster Librarian Do not Rename GMR10 Storing a Program to the PLC GFK-0787B Field Description Using the Store Function Storing a Revised Program Storing an Identical Program Following CPU Replacement Using the Download Utility with the Default PLC IDs Using the Program Download UtilityPress the Space Bar to Continue Processing Complete Customizing the Download Utility for Other PLC IDs Programming Information GFK-0787B Chapter Installation Information Termination Boards Genius Bus Connections Input Wiring Single Sensor to Three Blocks Triple Bus Three Sensors to Three Blocks Triple Bus DC Source Block IC660BBD020 Block Wiring for 16-Circuit Source Block in an Input Group DC Sink Block IC660BBD021 Block Wiring for 16-Circuit Sink Block in an Input Group DC Source Block IC660BBD024 Block Wiring for 32-Circuit Source Block in an Input Group DC Sink Block IC660BBD025 Block Wiring for 32-Circuit Sink Block in an Input Group Circuit, 4-Block Output Group Output Wiring for a 16-Circuit, 4-Block Group Block a Block Wiring for a 16-Circuit 4-Block Output Group OFF±ON±OFF Test Output Autotest and Pulse TestingON±OFF±ON Test GE Catalog Number CR7RBXXEL Spectra 700 IEC Control Relay Output Wiring for a 32-Circuit, 4-Block Group Block a Block Wiring for a 32-Circuit 4-Block Output Group GFK-0787B Milliamp Appendix Catalog Number Firmware Description Revision Level TÜV Restrictions Appendix a TÜV Certification COMMREQ, DATAINITCOMM, Call SUB, Callexternal Appendix Maintenance Override Project engineer Projectengineer, Typeapproval Recommendations Index Index-2 Index-3 Index-4