Description
Product Introduction
The GE IC693CPU323T is a 10-slot embedded Turbo CPU baseplate from the Series 90-30 PLC family, specifically featuring the Series T revision designation. This model integrates an 80188 processor running at 10MHz directly onto the backplane, providing a typical scan rate of 0.6ms per 1K of boolean logic with 12KB of user program memory. The Series T revision represents a specific firmware and hardware iteration within the IC693CPU323 product line.
As an embedded CPU baseplate, the IC693CPU323T combines processing power with rack functionality in a single compact unit. All 10 slots are available for I/O or specialty modules since the CPU is soldered to the backplane. The single serial port supports SNP and SNP-X slave protocols for programming and monitoring. The Series T revision maintains the same technical specifications as other IC693CPU323 revisions but may include specific firmware improvements or component updates introduced during the Series T production run—verify with OEM datasheet for revision-specific details.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Module Type | 10-slot embedded CPU baseplate |
| Product Line | Series 90-30 |
| Processor Type | Intel 80188 |
| Clock Speed | 10 MHz |
| User Program Memory | 12KB (6KB prior to Release 7) |
| Typical Scan Rate | 0.6ms per 1K boolean contacts |
| Discrete I/O Capacity | 320 combined input/output points |
| Analog Input | 64 words |
| Analog Output | 32 words |
| Register Memory | 1024 words (%R) |
| Timers/Counters | 340 combined |
| Shift Registers | Supported |
| Serial Ports | 1 (SNP Slave, SNP-X Slave protocols only) |
| Baseplate Configuration | 10 I/O slots, 1 power supply slot |
| Expansion Support | No expansion or remote racks |
| Interrupts | Not supported |
| Override Features | Not supported |
| Battery-Backed Clock | Not supported (battery in power supply) |
| PCM/CCM Compatibility | Not recommended |
| Operating Temperature | 0–60°C (32–140°F) |
| Power Requirements | 430mA @ 5VDC (from power supply) |
| Revision | Series T |
| Weight | 2.13 lbs (0.96 kg) |
- GE IC693CMM321
Quality Control Process
1. Incoming VerificationVerify Series T revision marking on baseplate label matches part number IC693CPU323T. Inspect serial number against GE Fanuc records. Check all 10 slot connectors for bent pins or damage. Validate firmware revision corresponds to Series T specifications. Reject units with physical damage or incorrect revision labeling.
2. Power-On TestInstall compatible power supply module. Apply power and verify proper initialization. Confirm CPU OK LED illuminates within 5 seconds. Listen for relay click indicating successful backplane power-up. Allow 5-minute warm-up period for stable operation.
3. Logic I/O TestInstall test I/O modules in multiple slots. Configure test program utilizing full 12KB memory capacity. Verify all 320 discrete I/O points via loopback testing. Test analog input and output with signal generator. Confirm shift register functionality.
4. Memory and Serial TestLoad 12KB test program and verify checksum. Test memory retention with 30-second power cycle (super capacitor backup). Verify serial port communication at 9600 baud via SNP protocol. Test SNP-X slave mode with monitoring device.
5. Revision-Specific VerificationConfirm firmware revision matches Series T specifications. Validate any revision-specific features or bug fixes applicable to Series T. Document specific firmware version and test results.
6. Final QC & PackagingApply QC Passed sticker with Series T revision noted. Document test results and firmware version. Package with anti-static materials and proper cushioning. Include compatibility notice for PCM/CCM modules.
Replacement Pitfall Guide
❗ Revision Verification RequiredIC693CPU323T is a specific Series T revision. Verify existing system requirements match Series T specifications before replacement. While most IC693CPU323 revisions are functionally equivalent, firmware differences may affect compatibility with specific applications—confirm with OEM.
❗ Non-Expandable ArchitectureLike all IC693CPU323 variants, the Series T revision does not support expansion racks or remote I/O. System is limited to single 10-slot baseplate. Plan architecture accordingly—migration to modular CPU required for expansion capability.
❗ Power Supply DependencyMemory backup battery is located in power supply module. Unplugging power supply disconnects battery from memory circuits. Super capacitor provides approximately 1 hour of memory retention—use UPS during maintenance to prevent program loss.
❗ PCM/CCM IncompatibilitySeries T revision is not compatible with CCM (Communication Coprocessor Module) or PCM (Programmable Coprocessor Module) devices. Use dedicated communication option modules instead. Attempting to install incompatible modules causes communication errors.
❗ No Advanced FeaturesSeries T revision lacks interrupt capability, override features, and battery-backed clock. These features cannot be added via firmware update or hardware modification. Upgrade to modular CPU (IC693CPU331+) if advanced features required.
❗ Serial Protocol LimitationSingle serial port supports only SNP Slave and SNP-X Slave protocols. Cannot operate as SNP master for remote programming. Add Ethernet module (IC693CMM321) for TCP/IP connectivity if required by application.
❗ Memory Capacity DifferencesEarlier firmware releases (prior to Release 7) only support 6KB program memory. Verify Series T revision includes Release 7 or later for full 12KB capacity. Earlier revisions cannot be upgraded to 12KB without hardware replacement.
❗ Default Rack NumberEmbedded CPU baseplate (including Series T revision) is always assigned Rack Number 0 by default. Cannot configure different rack number in software—this affects I/O addressing and system configuration.
Keep these in mind and you’ll cut 90% of rework time.
- GE IC693CMM321
Compatibility Matrix & Benchmarks
Compatibility Matrix
- IC693CPU323T → IC693CPU323 (other revisions) : Generally compatible — verify firmware-specific features
- IC693CPU323T → IC693CPU311/313 (5-slot versions) : Partially compatible — same CPU, fewer slots
- → IC693CPU331+ (modular) : Incompatible — different baseplate architecture
- → IC693CMM311 (CCM) : Not recommended — compatibility issues
- → IC693CMM321 (Ethernet) : Compatible — can be installed as option module
- → IC693PWR321 (power supply) : Compatible — recommended power supply
- → Hand-Held Programmer : Compatible — SNP programming only
Benchmarks
- Logic scan speed: 0.6ms per 1K boolean contacts (typical)
- User program memory: 12KB maximum (Series T with Release 7+)
- Memory retention: Up to 1 hour with super capacitor (without power supply battery)
- Discrete I/O response: <1ms typical latency
- Analog conversion time: <10ms typical per channel
- Serial communication speed: Up to 9600 baud (SNP protocol)
- Power-up time: <5 seconds from power-on to normal operation
- Mean time between failures (MTBF): >100,000 hours at 40°C
