GE 90-70 manual Non-Configurable Fault Group, Fatal Faults on Both Units in the Same Sweep

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5

Non-Configurable Fault Group

The table below shows the non-configurable faults and their fault action defaults.

Fault Group

Table Type

Description

Fault Actions

Not Synchronized	Synchronized

SYS_BUS_FAIL	PLC	System bus failure.	Fatal	Fatal

NO_USER_PRG	PLC	No User's Program on Power-up.	Non-Fatal	Non-Fatal

BAD_USER_RAM	PLC	Corrupted User RAM detected on	Fatal	Fatal
		Power-up.

WIND_CMPL_FAIL	PLC	Window Completion Failure in	Non-Fatal	Non-Fatal
		Constant Sweep Mode (i.e., all windows
		failed to receive their allotted time).

PASSWD_FAIL	PLC	Password Access Failure.	Non-Fatal	Non-Fatal

NULL_SYS_CNFG	PLC	NULL System Configuration for RUN	Non-Fatal	Non-Fatal
		Mode.

CPU_SOFTWR	PLC	PLC CPU Software Failure.	Fatal	Fatal

		More than the allowable number of I/O
TOO_MANY_IOCS	PLC	Bus Controllers were found in the	Fatal	Fatal
		system.

		Communication failure during a store
SEQ_STORE_FAIL	PLC	operation by the programmer. This	Fatal	Fatal
		fault results when the start-of-store
		sequence was received but not an end-
		of-store sequence.

ADD_RCK	PLC	Addition of Extra Rack	Non-Fatal	Non-Fatal

ADD_IOC	I/O	Addition of or Extra IOC	Non-Fatal	Non-Fatal

ADD_IO_MOD	I/O	Addition of or Extra I/O Module	Non-Fatal	Non-Fatal

ADD_OTHR_MOD	PLC	Addition of, Reset of, or Extra Option	Non-Fatal	Non-Fatal
		Module

IO_MOD_FAULT	I/O	I/O Module Fault	Non-Fatal	Non-Fatal

CPU_HARDWR	PLC	CPU Hardware Failure	Fatal	Fatal

MOD_HARDWR	PLC	Module Hardware Failure (for example,	Non-Fatal	Non-Fatal
		Serial Port Failure on PCM

MOD_OTHR SOFTWR	PLC	Option Module Software Failure	Non-Fatal	Non-Fatal

PRG_BLK_CHKSUM	PLC	Program Block Checksum Mismatch	Fatal	Fatal

LOW_BATTERY	PLC	Low Battery in the System	Non-Fatal	Non-Fatal

CNST_SW_EXCD	PLC	Constant Sweep Exceeded	Non-Fatal	Non-Fatal

PLC_FTBL_FULL	PLC	PLC System Fault Table Full	Non-Fatal	Non-Fatal

IO_FTBL_FULL	PLC	I/O Fault Table Full	Non-Fatal	Non-Fatal

APPLICATION_FLT	PLC	User Application Fault	Non-Fatal	Non-Fatal

Fatal Faults on Both Units in the Same Sweep

It is very unlikely that a fatal fault would occur on both units in the same sweep. If that should happen, however, the CPU will consult the synchronized fault action table for one unit and the not- synchronized fault action table for the other. That will allow one of the units to stay in Run mode when the synchronized fault action is Fatal and the not-synchronized fault action is Non-Fatal.

GFK-1527A

Chapter 5 Fault Detection

5-9

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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 Definition of Terms IntroductionEnhanced Hot Standby CPU Redundancy Compatibility with CPU780 Using the Redundancy CPU for Non-Redundant OperationRedundancy CPUs as Compared to Other Series 90-70 CPUs Features not Available with Redundancy CPUsDifferences in Operation for Redundancy CPUs Redundancy Communications Module Enhanced Redundancy CPU ModuleRedundant Racks Systems for Enhanced Hot Standby CPU RedundancyLocal I/O Genius I/OCable Connections Local I/0 Can be Enhanced Hot Standby CPU Redundancy System with Local I/OGHS Control Strategy Control StrategiesGDB Control Strategy Output Control with GHS Basic Enhanced Hot Standby OperationOutput Control with GDB Single Bus with Preferred Master GHS Control Strategy Basic CPU Redundancy SetupsCritical Data + Redundant Outputs Transferred Single Bus with Floating Master GDB Control StrategyPaired GBC = INT/EXT Internal External Dual Bus with Floating Master GDB Control StrategyOn-Line Repair Online ProgrammingDuplex CPU Redundancy System Components For Installation InstructionsSystem Racks Redundancy CPU FeaturesCPU Architecture Watchdog TimerExpansion Memory Board Memory Protect Keyswitch CPU FeaturesBattery Connectors CPU LEDsPort CPU Mode SwitchUnit Select Pushbutton Redundancy Communications ModuleRCM Status Leds ConnectorBus Transmitter Module ConnectorsBus Transmitter Module Status LEDs Cables and Termination Bus Receiver ModuleBus Receiver Module Status LEDs Location of GBCs and Blocks Genius Bus ControllerDual Bus Genius Networks Single Bus Genius NetworksBus Controller LEDs Programmer Connection for Configuration Configuration RequirementsOne Application Program in Both PLCs Program Folders in Control Programming SoftwareProgram Folders in Logicmaster CPU Configuration ParametersParameter Default Range Description Configuring Shared I/O ReferencesSystem Communications Window Considerations Finding the Memory Available for Application Program StorageBus Controller Configuration Parameters Rack Module Configuration ParametersGenius I/O Block Configuration Parameters Normal Operation Powerup of a Redundant CPU Resynchronization of a Redundant CPU Incompatible ConfigurationsGDB Control Strategy GHS Control StrategyOvrpre %S Reference Not Available References for CPU RedundancySweep Time Synchronization Scan SynchronizationAT a Output Data Transfer to the Backup UnitFail Wait Time Data Transfer TimeGFK-1527A Normal Operation Data Transfer Example Programming a Data Transfer from Backup Unit to Active UnitDisabling 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 Times Switching Control to the Backup UnitRUN 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 Example 8 Invalid RUN Disabled Mode for GDB Control StrategyCGR772 CGR935 Finding the Words to Checksum Each SweepFinding the Total Sweep Time Finding the Background Window TimeMiscellaneous Operation Information Timer and PID Function BlocksTimed Contacts Multiple I/O Scan SetsSequential Function Chart Programming SFC Stop to RUN Mode TransitionDebugger Background Window TimeGenius Bus Controller Switching Ethernet Global Data Consumption Ethernet Global Data in a Redundancy CPUSntp Timestamping Ethernet Global Data ProductionConfiguration of Fault Actions Fault DetectionFault Detection Message Fault Description Corrective Action PLC Fault Table Messages for RedundancyWith redundancy in other fault groups Fault Response Losing a Link Faulting the Redundancy Communications ModuleFault Actions in a CPU Redundancy System Fault Group Type Description Configurable FaultsFatal Faults on Both Units in the Same Sweep Non-Configurable Fault GroupOn-Line Repair Maintaining Parallel Bus Termination Power SupplyOn-Line Repair Recommendations RacksRedundancy Communications Module and Cables Central Processor UnitRedundancy Communications Link Failures Bus Transmitter Module Single Bus Networks Bus faultsGenius Bus Controller Genius BusGenius Blocks Dual Bus NetworksCabling Information SpecificationsIC690CBL714A Multi-drop Cable PurposeConnector a Connector A, 15-pin Female Index Battery connectors Bus Controller, GeniusIndex Online programming Online repair Svcreq