State Industries GFK-0827 manual Handling Folders, Configuration with Logicmaster

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The Fault Type is shown at the left. The first column under Fault Category (CFG) shows which faults are FATAL and which faults are DIAGNOSTIC for this CPU, when it is the only running CPU (i.e., stand-alone with no backup available). This column can be edited for each fault group/category to select FATAL or DIAGNOSTIC so that a safe shutdown or fault tolerant operation can be selected for when a failure occurs with no backup ready. The column next to it (PLC) shows the value (F or D) currently stored to the PLC or the defaults if it is not stored.

The next column shows the Synchronized PLC values. These values are either F (FATAL

-which causes a transition to STOP mode), or D (DIAGNOSTIC - which maintains the current state of the PLC) for this CPU, when it is synchronized. This column cannot be edited.

Handling Folders

It is very desirable from a maintenance standpoint to keep the applications programs identical between PLCs. The best way to handle this is to maintain different folders for each configuration and use the same logic folder for both PLCs. By using this scheme, you would have three folders for the redundant system.

1.FolderºAº - configuration for the Primary unit.

2.Folder ºBº - configuration for the Secondary unit.

3.Folder ºCº - logic and reference tables for both systems.

It is recommended that for a new system, you should STORE the configuration first, then the logic.

Functionally, it is not necessary to keep the same ladder in both PLCs but it is difficult to maintain such a system. Any ladder changes made in one system would have to be evaluated and hand-keyed in to the other folder. Other than visual inspection, there would be no way to tell if changes made in one system were appropriately made in the other.

Note

When entering either the Programmer Package or the Configuration Package while ONLINE and EQUAL, the folder containing the logic program will be automatically selected.

Configuration with Logicmaster 90-70

To configure the Hot Standby CPU Redundancy system, connect the programmer to either the Bus Transmitter Module for parallel communications or to the RS-485 serial port on the CPU 780 module for serial communications. For detailed information on installation procedures refer to GFK-0262, the Series 90-70 Programmable Controller Installation Manual. For detailed information on running Logicmaster 90-70 Programming Software, refer to GFK-0263, the Logicmaster 90-70 Programming Software User's Manual.

Any computer running Logicmaster 90 interfacing with the PLC must be connected to the same power ground as the PLC unless special isolated drivers are used. The parallel

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Series 90-70 Hot Standby CPU Redundancy User's Guide ± December 1993

GFK-0827

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Contents GE Fanuc Automation GFL±002 Related Publications Content of this ManualWe Welcome Your Comments and Suggestions PrefaceContents Chapter System Components Chapter Configuration Chapter Operation System Operation Fault Detection and Control Actions Synchronized Hot Standby CPU Redundancy System Configuration Contents Hot Standby CPU Redundancy Product Chapter IntroductionGFK-0827 Benefits of the Hot Standby CPU Redundancy Product Features of the Hot Standby CPU Redundancy ProductGenius I/O System Systems for Hot Standby CPU Redundancy SystemsLocal I/O System Cable ConnectionsControl Strategy Basic Hot Standby OperationSynchronized Hot Standby CPU Redundancy System Configuration Redundancy Communications Module Redundancy CPU ModuleSwitch to Backup Unit Time Bumpless SwitchingSynchronized CPUs Effect on Scan TimeOn-Line Repair Configurable Backup Data SizeOn-Line Programming Programming Considerations Configuration RequirementsTerm Definition Definition of TermsAcronym Definition Commonly Used AcronymsRedundancy CPU Chapter System ComponentsCapacities for Redundancy CPU, IC697CPU780 Watchdog TimerCPU Architecture Redundancy CPU IC697CPU CPU FeaturesValid Operating Mode Selection CPU Mode SwitchCPU Status LEDs Memor y Protect KeyswitchBattery Connectors Expansion Memory Boards for CPU Serial Port ConnectorExpansion Memory Board Redundancy Communications Module RCM FeaturesBoard OK RCM System Status LedsUnit Selection Pushbutton RCM ConnectorsBus Transmitter Module LED Status IndicatorsBus Receiver Module BTM ConnectorsGenius Bus Controller Bus Signal TerminationBRM Connectors Genius Bus Controller User Features Racks GBC ConnectorsConfiguring a Hot Standby CPU Redundancy System Chapter ConfigurationLogicmaster 90 Configuration Basic Redundancy System SetupSystem Configuration Redundancy System RequirementsMonitor or Online mode Screens for Fault Category ConfigurationHandling Folders Configuration with LogicmasterConfiguration of a Redundancy CPU Module GFK-0827 Redundant CPU Requirements Background Window Normal Sweep ModeRedund Type Constant Sweep Mode Constant Window Sweep ModeShared I/O Ctrl StrgyFail Wait Shared I/O Reference Values Shared I/O Data ParametersReference Type ReferenceSize CalculationforNumberofBytes Transfer Data SizeConfiguring a CPU Expansion Memory Board Configuration of a Redundancy Communications Module Configuration Paired GBC Parameter Configuration of a Genius Bus ControllerSerial Bus Address Configuring a Primary Redundant PLC Select the Redundancy CPU Module Select an Expansion Memory Board Configure the Redundant Communications Module Configure a Genius Bus Controller Configuration Configure Genius I/O Blocks Configure the Bus Transmitter Module Configuring a Secondary Redundant PLC Change Redund Type GFK-0827 Chapter Operation Power-Up Sequence of a Redundant CPUIncompatible Configurations Resynchronization of the Redundant CPU Hot-Standby Redundancy Control Strategy First Data Transfer %I, %AI and Synchronization Synchronous ScanData Transfer from Backup Unit to Active Unit Second Data Transfer %Q, %AQ, %R, and %M Switching Control to Backup UnitRole Switch Svcreq Definition for% S Reference for Redundancy Status References for CPU RedundancyRedundancy CPU Considerations Differences in Operation for CPU RUN Disabled ModeRUN/ENABLED Locrdy Locact Remrdy Remact Configuration of Fault Actions Background Window Time Stop to RUN Mode TransitionWords per Sweep = Ovrpre %S Reference Timed ContactsGenius Bus Controller Switching Fault Categories Fault DetectionChanging Fault Category Actions Fault Zoom Help Text for Redundancy Error Codes PLC Fault TableFaulting RCMs, Losing Links, and Terminating Communications GFK-0827 Maskable Fault Group Descriptions Fault Actions in a CPU Redundancy SystemUserConfigurable Maskable Fault Group ActionsNon-Maskable Fault Action Descriptions Non-Maskable Fault Group DescriptionsOn-Line Repair Recommendations On-Line RepairMaintaining Parallel Bus Termination Racks Power SupplyCentral Processor Unit Redundancy Communications Module and CablesGenius Bus Controller Redundancy Communications Link FailuresBus Transmitter Module GeniusBlocks Genius BusRedundancy Alternatives Appendix Redundancy AlternativesRedundancy Option Key See Table PLC RedundancyOptionsSeries 90-70 Redundancy Through Application Logic Index Index Index Index Index
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