Chapter Fault Detection | GE 90-70 specification

Contents

Fail Wait Time

4-8

	Programming a Data Transfer from Backup Unit to Active Unit	4-10
	Data Transfer Example	4-10
	Disabling Data Transfer Copy in Backup Unit (SVCREQ #43)	4-11
	Command Block for SVCREQ #43	4-12
	Backup Qualification with SVCREQ #43	4-13
	Validating the Backup PLC's Input Scan	4-13
	Validating the Backup PLC's Logic Solution	4-13
	Switching Control to the Backup Unit	4-14
	Switching Times	4-14
	Commanding a Role Switch from the Application Program (SVCREQ #26)	4-14
	Example	4-14
	RUN Disabled Mode	4-15
	RUN Disabled Mode for GHS Control Strategy	4-15
	Example 1: Role switches allowed on both units	4-15
	Example 2: Role switches allowed on both units	4-16
	Example 3: Role switches not allowed on either unit	4-16
	Example 4: Role switches allowed on both units	4-16
	Example 5: Role switches allowed on both units Secondary Unit Active	4-17
	Example 6: Role switches not allowed on either unit, Secondary Unit Active	4-17
	Example 7: Role switches allowed on both units, Secondary Unit Active	4-17
	Example 8: Invalid	4-18
	RUN Disabled Mode for GDB Control Strategy	4-18
	Background User Checksum and Background Window Timing Instructions	4-19
	Finding the Words to Checksum Each Sweep	4-19
	Finding the Background Window Time	4-20
	Finding the Total Sweep Time	4-20
	Miscellaneous Operation Information	4-21
	Timer and PID Function Blocks	4-21
	Timed Contacts	4-21
	Multiple I/O Scan Sets	4-21
	C Debugger	4-22
	STOP to RUN Mode Transition	4-22
	Background Window Time	4-22
	Sequential Function Chart Programming (SFC)	4-22
	Genius Bus Controller Switching	4-23
	Ethernet Global Data in a Redundancy CPU	4-24
	Ethernet Global Data Consumption	4-24
	Ethernet Global Data Production	4-25
	SNTP Timestamping	4-25
Chapter 5	Fault Detection	5-1
	Configuration of Fault Actions	5-1
	Fault Detection	5-2
	PLC Fault Table Messages for Redundancy	5-3
	Fault Response	5-5
	Faulting RCMs, Losing Links, and Terminating Communications	5-6
	Faulting the Redundancy Communications Module	5-6
	Losing a Link	5-6

GFK-1527A

Contents

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Image 7

GE 90-70 manual Chapter Fault Detection

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 Introduction Enhanced Hot Standby CPU Redundancy Compatibility with CPU780 Using the Redundancy CPU for Non-Redundant Operation Redundancy CPUs as Compared to Other Series 90-70 CPUs Features not Available with Redundancy CPUsDifferences in Operation for Redundancy CPUs Systems for Enhanced Hot Standby CPU Redundancy Enhanced Redundancy CPU ModuleRedundancy Communications Module Redundant Racks Local I/O Genius I/OCable Connections Local I/0 Can be Enhanced Hot Standby CPU Redundancy System with Local I/O GHS 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 Setups Critical Data + Redundant Outputs Transferred Single Bus with Floating Master GDB Control Strategy Paired GBC = INT/EXT Internal External Dual Bus with Floating Master GDB Control Strategy On-Line Repair Online ProgrammingDuplex CPU Redundancy System Components For Installation InstructionsSystem Racks Redundancy CPU Features CPU Architecture Watchdog TimerExpansion Memory Board CPU LEDs CPU FeaturesMemory Protect Keyswitch Battery Connectors Port CPU Mode Switch Unit Select Pushbutton Redundancy Communications Module RCM Status Leds Connector Bus Transmitter Module ConnectorsBus Transmitter Module Status LEDs Cables and Termination Bus Receiver ModuleBus Receiver Module Status LEDs Location of GBCs and Blocks Genius Bus Controller Dual Bus Genius Networks Single Bus Genius Networks Bus Controller LEDs Program Folders in Control Programming Software Configuration RequirementsProgrammer Connection for Configuration One Application Program in Both PLCs Program Folders in Logicmaster CPU Configuration Parameters Parameter Default Range Description Configuring Shared I/O References System Communications Window Considerations Finding the Memory Available for Application Program Storage Bus Controller Configuration Parameters Rack Module Configuration Parameters Genius I/O Block Configuration Parameters Normal Operation Powerup of a Redundant CPU Resynchronization of a Redundant CPU Incompatible Configurations GDB Control Strategy GHS Control Strategy Ovrpre %S Reference Not Available References for CPU Redundancy Sweep Time Synchronization Scan Synchronization AT a Output Data Transfer to the Backup Unit Fail Wait Time Data Transfer Time GFK-1527A Normal Operation Data Transfer Example Programming a Data Transfer from Backup Unit to Active Unit Disabling 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 Unit RUN 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 Strategy CGR772 CGR935 Finding the Words to Checksum Each Sweep Finding the Total Sweep Time Finding the Background Window Time Multiple I/O Scan Sets Timer and PID Function BlocksMiscellaneous Operation Information Timed Contacts Background Window Time Stop to RUN Mode TransitionSequential Function Chart Programming SFC Debugger Genius Bus Controller Switching Ethernet Global Data Consumption Ethernet Global Data in a Redundancy CPU Sntp Timestamping Ethernet Global Data Production Configuration of Fault Actions Fault Detection Fault Detection Message Fault Description Corrective Action PLC Fault Table Messages for Redundancy With redundancy in other fault groups Fault Response Losing a Link Faulting the Redundancy Communications Module Fault Actions in a CPU Redundancy System Fault Group Type Description Configurable Faults Fatal Faults on Both Units in the Same Sweep Non-Configurable Fault Group On-Line Repair Racks Power SupplyMaintaining Parallel Bus Termination On-Line Repair Recommendations Redundancy Communications Module and Cables Central Processor UnitRedundancy Communications Link Failures Genius Bus Single Bus Networks Bus faultsBus Transmitter Module Genius Bus Controller Genius Blocks Dual Bus Networks Purpose SpecificationsCabling Information IC690CBL714A Multi-drop Cable Connector a Connector A, 15-pin Female Index Battery connectors Bus Controller, Genius Index Online programming Online repair Svcreq