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3. Key Technical Specifications
- Processor: 96 MHz 80486DX4
- User Memory: 6 MB
- Floating Point Math: Yes
- Serial Ports: RS-232 and RS-485
- I/O Capacity: Up to 2,048 discrete / 1,264 analog points
- Backplane Current: 2.0 A at 5 VDC typical
- Operating Temperature: 0 to 60°C
- Battery Backup: Yes, for memory retention
- Programming Languages: Ladder, Structured Text, etc.
- Scan Time: Fast execution for complex applications
4. Product Introduction
The GE IC697CPX928-FE is an enhanced central processing unit for the Series 90-70 PLC system. It features a 96 MHz processor with 6 MB of user memory and built-in floating point mathematics support.
This CPU is used in demanding applications that require higher performance and larger memory capacity than basic models. It installs in standard or redundant Series 90-70 racks.
- IC697CPX928-FE
- IC697CPX928-FE
5. Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to this Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| CPU not running | No power or stopped state | ✅ High | Check RUN LED and power supply | Verify power and switch to Run mode |
| Fault LED active | Program or hardware fault | ✅ High | Read fault table in programming software | Clear faults and reload program |
| Slow scan times | Large program or high I/O count | ✅ Medium | Monitor sweep time in software | Optimize logic or upgrade hardware |
| Communication failure | Cable or port configuration | ✅ Medium | Test serial ports with known good cable | Check baud rates and cable integrity |
| Memory battery low | Old battery | ✅ High | Check battery status LED or fault | Replace CPU battery |
Contact technical support with CPU LED status, fault logs, and project details if problems persist.
6. Frequently Asked Questions (FAQ)
What is the memory capacity of the IC697CPX928-FE? It provides 6 MB of user memory, suitable for larger programs and data tables.
Does this CPU support floating point math? Yes. It includes hardware support for floating point operations.
Can I use this CPU in a redundant system? Yes, when paired with the appropriate redundant rack such as the IC697CHS770 and matching redundancy modules.
How do I program this CPU? Use Proficy Machine Edition or compatible Series 90-70 programming software via the serial ports.
Is the -FE revision different from earlier versions? The FE indicates a specific hardware revision with full compatibility to prior versions while incorporating manufacturing improvements.
Why choose New Surplus for this CPU? These units are genuine OEM stock that were never field deployed. They undergo testing and offer significant savings for maintaining or expanding legacy Series 90-70 systems.
What should I do before swapping the CPU? Backup your current project, document all configuration settings, take photos of wiring and LEDs, and have a fresh battery ready for the replacement module.
