GE 90-70 manual Connector, RCM Status Leds

Page 28

2

Connector

 

LEDs

he top connector on the Redundancy Communications Module

BOARD OK

LOCAL SYSTEM ACTIVE

 

LOCAL SYSTEM READY

must be connected via an I/O cable to the last rack of the other

REMOTE SYSTEM READY

REMOTE SYSTEM ACTIVE

PLC. If no expansion rack is used, it is connected to the lower

Unit Select

connector on the Bus Transmitter Module of the other system. The

Pushbutton

I/O cable with built-in termination is available in three lengths:

 

IC697CBL803,

3 feet (0.9 meters)

Connector for

TIC697CBL811,

 

Communications

10 feet (3 meters)

Cable

IC697CBL826, 25 feet (7.5 meters)

The lower connector is not used.

RCM Status LEDS

The RCM's five status LEDs are always updated by the appropriate system. The module automatically turns off four of the LEDs (not the board OK LED) if they are not updated within 500ms.

These LEDs report the status of the health of the RCM and control status of the Hot Standby CPU Redundancy system. The status provided by these LEDs can also be read from the application program logic in an area of %S memory (%S33 - %S39). These status bits are read-only.

The term Local System below means the system where the RCM resides. Remote System is the system to which the RCM is connected via the communications cable. Each RCM has an associated local and remote system.

Board OK: This LED lights when diagnostics are complete and the RCM has been determined to be operating normally. It stays on unless the RCM fails.

Local System Ready: Indicates whether the local system is ready to become the active system in a redundant PLC configuration. If this LED is on, the local system has been configured for redundancy, is in RUN mode, and is able to take control of the redundant system if selected as the active system. The local system MUST set the state of this LED at least once each sweep; if it doesn't, the hardware forces the LED off after the timer expires.

Local System Active: Indicates whether the local system is the controlling (active) system in a redundancy system. The local system MUST set the state of this LED at least once during each sweep; if the local system fails to set the state of the LED, the hardware forces the LED off after the timer expires.

Remote System Ready: Indicates whether the remote system is ready to become the active system in a redundant PLC system. If the LED is on, the remote system has been configured for redundancy, is in RUN mode, and is able to take control of the redundant system if selected as the active system. The remote system MUST set the state of this LED at least once during each sweep; if the remote system fails to set the state of the LED, the hardware forces the LED off after the timer expires.

Remote System Active: Indicates whether the remote system is the controlling (active) system in a redundancy scheme. The remote system MUST set the state of this LED at least once during each sweep; if the remote system fails to set the state of the LED, the hardware forces the LED off after the timer expires.

GFK-1527A

Chapter 2 System Components

2-7

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Contents GE Fanuc Automation GFL-002 Preface Content of This ManualRelated Publications Preface Contents Contents Chapter Fault Detection Appendix a Cabling Information Introduction Definition of TermsEnhanced Hot Standby CPU Redundancy Using the Redundancy CPU for Non-Redundant Operation Compatibility with CPU780Redundancy CPUs as Compared to Other Series 90-70 CPUs Features not Available with Redundancy CPUsDifferences in Operation for Redundancy CPUs Enhanced Redundancy CPU Module Redundancy Communications ModuleRedundant Racks Systems for Enhanced Hot Standby CPU RedundancyLocal I/O Genius I/OCable Connections Enhanced Hot Standby CPU Redundancy System with Local I/O Local I/0 Can beGHS Control Strategy Control StrategiesGDB Control Strategy Output Control with GHS Basic Enhanced Hot Standby OperationOutput Control with GDB Basic CPU Redundancy Setups Single Bus with Preferred Master GHS Control StrategySingle Bus with Floating Master GDB Control Strategy Critical Data + Redundant Outputs TransferredDual Bus with Floating Master GDB Control Strategy Paired GBC = INT/EXT Internal ExternalOn-Line Repair Online ProgrammingDuplex CPU Redundancy System Components For Installation InstructionsSystem Racks Features Redundancy CPUCPU Architecture Watchdog TimerExpansion Memory Board CPU Features Memory Protect KeyswitchBattery Connectors CPU LEDsCPU Mode Switch PortRedundancy Communications Module Unit Select PushbuttonConnector RCM Status LedsBus Transmitter Module ConnectorsBus Transmitter Module Status LEDs Cables and Termination Bus Receiver ModuleBus Receiver Module Status LEDs Genius Bus Controller Location of GBCs and BlocksSingle Bus Genius Networks Dual Bus Genius NetworksBus Controller LEDs Configuration Requirements Programmer Connection for ConfigurationOne Application Program in Both PLCs Program Folders in Control Programming SoftwareCPU Configuration Parameters Program Folders in LogicmasterConfiguring Shared I/O References Parameter Default Range DescriptionFinding the Memory Available for Application Program Storage System Communications Window ConsiderationsRack Module Configuration Parameters Bus Controller Configuration ParametersGenius I/O Block Configuration Parameters Normal Operation Powerup of a Redundant CPU Incompatible Configurations Resynchronization of a Redundant CPUGHS Control Strategy GDB Control StrategyReferences for CPU Redundancy Ovrpre %S Reference Not AvailableScan Synchronization Sweep Time SynchronizationOutput Data Transfer to the Backup Unit AT aData Transfer Time Fail Wait TimeGFK-1527A Normal Operation Programming a Data Transfer from Backup Unit to Active Unit Data Transfer ExampleDisabling Data Transfer Copy in Backup Unit Svcreq #43 Command Block for Svcreq #43 Validating the Backup PLCs Input Scan Backup Qualification with Svcreq #43Validating the Backup PLCs Logic Solution Switching Control to the Backup Unit Switching TimesRUN Disabled Mode for GHS Control Strategy RUN Disabled ModeExample 1 Role switches allowed on both units Example 3 Role switches not allowed on either unit Example 2 Role switches allowed on both unitsExample 4 Role switches allowed on both units Backup Active RUN Disabled Mode for GDB Control Strategy Example 8 InvalidFinding the Words to Checksum Each Sweep CGR772 CGR935Finding the Background Window Time Finding the Total Sweep TimeTimer and PID Function Blocks Miscellaneous Operation InformationTimed Contacts Multiple I/O Scan SetsStop to RUN Mode Transition Sequential Function Chart Programming SFCDebugger Background Window TimeGenius Bus Controller Switching Ethernet Global Data in a Redundancy CPU Ethernet Global Data ConsumptionEthernet Global Data Production Sntp TimestampingFault Detection Configuration of Fault ActionsFault Detection PLC Fault Table Messages for Redundancy Message Fault Description Corrective ActionWith redundancy in other fault groups Fault Response Faulting the Redundancy Communications Module Losing a LinkFault Actions in a CPU Redundancy System Configurable Faults Fault Group Type DescriptionNon-Configurable Fault Group Fatal Faults on Both Units in the Same SweepOn-Line Repair Power Supply Maintaining Parallel Bus TerminationOn-Line Repair Recommendations RacksRedundancy Communications Module and Cables Central Processor UnitRedundancy Communications Link Failures Single Bus Networks Bus faults Bus Transmitter ModuleGenius Bus Controller Genius BusDual Bus Networks Genius BlocksSpecifications Cabling InformationIC690CBL714A Multi-drop Cable PurposeConnector a Connector A, 15-pin Female Battery connectors Bus Controller, Genius IndexIndex Online programming Online repair Svcreq
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