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Key Technical Specifications
- Model: IC695CPU310-FT
- Brand: GE Fanuc / Emerson
- Series: PACSystems RX3i
- Type: PLC CPU module
- Processor Speed: 300 MHz
- User Memory: 10 MB
- Nonvolatile Memory: 10 MB
- Serial Ports: 2
- Supported Serial Protocols: RS-232, RS-485, Modbus RTU, SNP
- Operating Temperature: 0 to 60 C
- Power Requirement: 3.3 VDC and 5 VDC backplane power
- Compatible Backplanes: IC695CHS012 and IC695CHS016
- Legacy I/O Support: Series 90-30 remote I/O migration support
- Program Capacity: Up to 512 blocks
- Execution Speed: 1,000 boolean instructions in 0.195 ms
Product Introduction
GE IC695CPU310-FT is a PACSystems RX3i CPU module used as the main processor in GE Fanuc and Emerson control systems. It handles logic execution, serial communications, and RX3i backplane coordination in industrial automation applications.
It is typically selected for replacement work, spare inventory, and RX3i upgrades where the original CPU310 platform is already in service. The practical value is its mix of 10 MB user memory, dual serial ports, and support for legacy Series 90-30 remote I/O migration.
- IC695CPU310-FT
Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to this Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| No status LEDs after power-up | Backplane power missing or CPU seated badly | High | Measure backplane 3.3 VDC and 5 VDC, then reseat the module | Check rack power and insertion before replacing CPU |
| RUN light will not stay on | Logic fault, project issue, or memory problem | High | Review fault codes and try a known-good project load | Reload the application or replace if faults persist |
| Serial comms fail on both ports | Wrong baud, protocol, or damaged serial interface | High | Verify RS-232 or RS-485 settings and cable pinout | Confirm configuration before declaring CPU failure |
| RX3i rack not recognized | Backplane or rack compatibility issue | Medium | Confirm IC695CHS012 or IC695CHS016 use and inspect connector pins | Verify rack type and seating first |
| Legacy remote I/O offline | Configuration mismatch or migration setup error | High | Check Series 90-30 remote I/O mapping and controller parameters | Recheck migration settings and firmware compatibility |
| Frequent resets under load | Power sag or thermal issue | Medium | Monitor supply voltage and cabinet temperature during operation | Stabilize power and cooling before replacing hardware |
If the fault is not clear, send photos of the CPU LEDs, rack type, and diagnostic logs to technical support.
Frequently Asked Questions
Q: Is IC695CPU310-FT obsolete?
The IC695CPU310 platform is widely sold through surplus and secondary channels, which usually means OEM production is limited or discontinued. Availability depends on stock, not a current factory line.
Q: Is this a direct replacement for another RX3i CPU310?
Yes, if the hardware family and suffix match your site requirements. Still verify firmware level, rack type, and application compatibility before installing it.
Q: Can I hot-swap this CPU?
No. Power down first. Swapping a CPU live can corrupt the application or damage the backplane.
Q: Will my program stay intact during replacement?
Not automatically. Back up the project and controller configuration first. Assume nothing survives unless you have already verified memory retention and backup files.
Q: Why is this cheaper than buying from the factory?
Because this is usually new surplus or secondary-market stock, not current OEM production. That price gap is normal for discontinued automation hardware.
Q: What should I verify before ordering?
Check the exact suffix, backplane model, power budget, serial protocol needs, and whether you need 90-30 migration support. One wrong suffix can turn a direct swap into a downtime problem.
Q: What condition should I expect?
For surplus stock, expect unused or lightly handled inventory that should still be tested and documented by the seller. Ask for test status, serial traceability, and warranty terms before purchase.
