GE IC697CPU780 / IC697CPU788 / IC697CPU789 Series 90-70 Redundancy CPUs
Product Description
IC697CPU780, IC697CPU788 and IC697CPU789 are Series 90-70 CPUs intended for redundancy-oriented control architectures. They share the same PLC family, but their redundancy method and supported I/O scale differ, so the three catalog numbers are not direct substitutes.
CPU780 supports a hot-standby arrangement, whereas CPU788 and CPU789 serve Genius Modular Redundancy systems at different voted-I/O scales. The catalog numbers therefore cannot be selected by processor family alone; controller pairing, voting topology and project configuration decide the correct replacement.
Technical Specifications
Common PLC Base, Different Redundancy Duty
CPU780
Designed around paired hot-standby controllers and transfer of control.
CPU788
GMR role for smaller triplex-voted I/O systems.
CPU789
GMR role for a much larger triplex-voted I/O scale.
Selection rule
Match the existing redundancy topology, I/O voting and project configuration—not only the rack connector.
Redundancy Validation
Archive
Archive both controller projects and capture active/backup status plus synchronization faults.
Label
Label redundancy links and Genius buses before removing either controller.
Prove
Prove synchronization, switchover, voted-I/O diagnostics and recovery from a single-channel fault.
FAQ
Can IC697CPU780 / IC697CPU788 / IC697CPU789 share one Common PLC Base, Different Redundancy Duty decision?
No. They share a product family, but the documented model-specific role, capacity, enclosure or redundancy configuration differs. Use the shared specifications and model-specific differences before selecting one.
What must be backed up before the Redundancy Validation procedure for IC697CPU780 / IC697CPU788 / IC697CPU789?
Save the editable application, hardware configuration, communication parameters, retained production data and the firmware or software baseline used by this Series 90-70 Redundancy CPUs.
How does cpu780 affect Common PLC Base, Different Redundancy Duty for IC697CPU780 / IC697CPU788 / IC697CPU789?
Designed around paired hot-standby controllers and transfer of control.
Why does cpu788 need separate verification during Redundancy Validation for IC697CPU780 / IC697CPU788 / IC697CPU789?
GMR role for smaller triplex-voted I/O systems.
How should IC697CPU780 / IC697CPU788 / IC697CPU789 complete the Redundancy Validation sequence before return to service?
Complete the documented startup sequence, verify diagnostics and communications, test the application under controlled conditions and confirm the applicable machine interlocks.
Which records confirm that IC697CPU780 / IC697CPU788 / IC697CPU789 completed the Common PLC Base, Different Redundancy Duty review?
Keep the restored configuration, test results, diagnostic status and the final record for cpu789 so the installed baseline can be reproduced during later maintenance.
Maintenance teams may need several unrelated product families for one shutdown or spare-store replenishment plan.
Moore Automation can coordinate multi-line purchasing lists and provide fast-delivery options together with a 12-month warranty.
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