State Industries GFK-0827 manual Unit Selection Pushbutton, RCM Connectors

Page 32

2

LOCALSYSTEM ACTIVE

Indicates whether the local unit is the controlling (or active) unit in a redundancy system. It is the responsibility of the local unit to set the state of this LED at least once during each sweep; if the local unit is unable to set (or fails to set) the state of the LED, the hardware will force the LED to off after the timer has timed out.

REMOTE SYSTEM READY

Indicates whether the remote unit is ready to become the active unit in a redundant PLC configuration. If the LED is on, the remote unit has been configured for redundancy, is in RUN mode, and has performed sufficient initialization, diagnostics, and hand±shaking to take control of the redundant system if selected as the active unit. It is the responsibility of the remote unit to set the state of this LED at least once during each sweep; if the remote unit is unable to set (or fails to set) the state of the LED, the hardware will force the LED to off after the timer has timed out.

REMOTE SYSTEM ACTIVE

Indicates whether the remote unit is the controlling (or active) unit in a redundancy scheme. It is the responsibility of the remote unit to set the state of this LED at least once during each sweep; if the remote unit is unable to set (or fails to set) the state of the LED, the hardware will force the LED to off after the timer has timed out.

Unit Selection Pushbutton

The module has a momentary pushbutton switch which when depressed for 1 second and released allows you to manually switch control from the active unit to the backup unit if the backup unit is READY. The status of each pushbutton is checked by the PLC CPU software. The switch between units can also be controlled through user logic implementation of a SVC_REQ function that is activated by user logic. After a switch has been requested, you must wait 10 seconds before requesting another switch.

RCM Connectors

The RCM has two connectors mounted on the front of the board. The top connector is the only one used. It is connected via an I/O cable with built-in termination to the last rack of the other PLC system. If no expansion rack is used, it is connected to the lower connector on the Bus Transmitter Module of the other system. The I/O cable with built-in termination is available in two lengths:

HIC697CBL811, 10 feet (3 meters)

HIC697CBL826, 25 feet (7.5 meters)

GFK-0827

Chapter 2 System Components

21

Page 31 Page 33
Image 32
Page 31 Page 33
Contents GE Fanuc Automation GFL±002 Content of this Manual Related PublicationsPreface We Welcome Your Comments and SuggestionsContents Chapter System Components Chapter Configuration Chapter Operation System Operation Fault Detection and Control Actions Synchronized Hot Standby CPU Redundancy System Configuration Contents Chapter Introduction Hot Standby CPU Redundancy ProductGFK-0827 Features of the Hot Standby CPU Redundancy Product Benefits of the Hot Standby CPU Redundancy ProductSystems for Hot Standby CPU Redundancy Systems Genius I/O SystemLocal I/O System Cable ConnectionsBasic Hot Standby Operation Control StrategySynchronized Hot Standby CPU Redundancy System Configuration Redundancy CPU Module Redundancy Communications ModuleBumpless Switching Switch to Backup Unit TimeSynchronized CPUs Effect on Scan TimeOn-Line Repair Configurable Backup Data SizeOn-Line Programming Configuration Requirements Programming ConsiderationsDefinition of Terms Term DefinitionCommonly Used Acronyms Acronym DefinitionChapter System Components Redundancy CPUCapacities for Redundancy CPU, IC697CPU780 Watchdog TimerCPU Architecture CPU Features Redundancy CPU IC697CPUCPU Mode Switch Valid Operating Mode SelectionCPU Status LEDs Memor y Protect KeyswitchBattery Connectors Expansion Memory Boards for CPU Serial Port Connector Expansion Memory Board RCM Features Redundancy Communications ModuleRCM System Status Leds Board OKRCM Connectors Unit Selection PushbuttonLED Status Indicators Bus Transmitter ModuleBTM Connectors Bus Receiver ModuleGenius Bus Controller Bus Signal TerminationBRM Connectors Genius Bus Controller User Features GBC Connectors RacksChapter Configuration Configuring a Hot Standby CPU Redundancy SystemBasic Redundancy System Setup Logicmaster 90 ConfigurationSystem Configuration Redundancy System RequirementsScreens for Fault Category Configuration Monitor or Online modeConfiguration with Logicmaster Handling FoldersConfiguration of a Redundancy CPU Module GFK-0827 Redundant CPU Requirements Background Window Normal Sweep ModeRedund Type Constant Window Sweep Mode Constant Sweep ModeShared I/O Ctrl StrgyFail Wait Shared I/O Data Parameters Shared I/O Reference ValuesTransfer Data Size Reference Type ReferenceSize CalculationforNumberofBytesConfiguring a CPU Expansion Memory Board Configuration of a Redundancy Communications Module Configuration Configuration of a Genius Bus Controller Paired GBC ParameterSerial 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 Power-Up Sequence of a Redundant CPU Chapter OperationIncompatible Configurations Resynchronization of the Redundant CPU Hot-Standby Redundancy Control Strategy Synchronous Scan First Data Transfer %I, %AI and SynchronizationData Transfer from Backup Unit to Active Unit Switching Control to Backup Unit Second Data Transfer %Q, %AQ, %R, and %MRole Switch Svcreq References for CPU Redundancy Definition for% S Reference for Redundancy StatusRedundancy CPU Considerations RUN Disabled Mode Differences in Operation for CPURUN/ENABLED Locrdy Locact Remrdy Remact Configuration of Fault Actions Stop to RUN Mode Transition Background Window TimeWords per Sweep = Timed Contacts Ovrpre %S ReferenceGenius Bus Controller Switching Fault Detection Fault CategoriesChanging Fault Category Actions PLC Fault Table Fault Zoom Help Text for Redundancy Error CodesFaulting RCMs, Losing Links, and Terminating Communications GFK-0827 Fault Actions in a CPU Redundancy System Maskable Fault Group DescriptionsMaskable Fault Group Actions UserConfigurableNon-Maskable Fault Group Descriptions Non-Maskable Fault Action DescriptionsOn-Line Repair Recommendations On-Line RepairMaintaining Parallel Bus Termination Power Supply RacksCentral Processor Unit Redundancy Communications Module and CablesGenius Bus Controller Redundancy Communications Link FailuresBus Transmitter Module Genius Bus GeniusBlocksAppendix Redundancy Alternatives Redundancy AlternativesRedundancy Option Key See Table RedundancyOptions PLCSeries 90-70 Redundancy Through Application Logic Index Index Index Index Index
Top Page Image Contents