Description
Key Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | GE Fanuc |
| Model | IC693CPU374-GU |
| Product Family | Series 90-30 PLC |
| Product Type | Single-Slot CPU Module |
| Processor | Embedded 586 (AMD SC520) |
| Processor Speed | 133 MHz |
| User Memory | 240 KB RAM/Flash |
| Memory Type | RAM and Flash |
| Ethernet Ports | 2 × 10/100Base-T/TX RJ-45 |
| Serial Communication | RS-485 (via power supply) |
| Maximum I/O Capacity | Up to 2,048 discrete I/O points |
| Typical Scan Rate | 0.15 ms per 1K Boolean logic |
| Power Requirement | 7.4 W @ 5 VDC |
| Operating Temperature | 0°C to +60°C |
| Storage Temperature | -40°C to +85°C |
These specifications are based on the Series 90-30 CPU374 hardware documentation.
Product Introduction & Supply Chain Strategy
The GE IC693CPU374-GU is one of the highest-performance CPUs in the GE Fanuc Series 90-30 PLC family. It combines a 133 MHz Embedded 586 processor, 240 KB user memory, and dual integrated 10/100 Mbps Ethernet ports into a single-slot controller capable of supporting demanding industrial automation applications. The CPU executes ladder logic, manages distributed I/O, and communicates directly with HMIs, SCADA systems, and peer PLCs through built-in Ethernet interfaces. Floating-point math support enables efficient execution of advanced control algorithms.
Although the Series 90-30 platform remains widely installed, it has reached the mature stage of its lifecycle. OEM production has largely ceased, making New Surplus inventory increasingly valuable. Facilities relying on Series 90-30 controllers should maintain 1–2 spare CPU374 modules, qualify multiple suppliers, and implement long-term spare parts planning to minimize operational risk.
Installation & Configuration Guide
Stage 1 – Preparation
- Perform Lock-Out/Tag-Out (LOTO).
- Back up the PLC application and hardware configuration.
- Record the CPU firmware revision and Ethernet IP settings.
- Wear an approved ESD wrist strap.
- Label all network and field connections.
Stage 2 – Removal
- Turn off PLC power.
- Disconnect Ethernet cables.
- Release the CPU retaining mechanism.
- Remove the CPU from the baseplate.
- Inspect connectors for contamination or damage.
Stage 3 – Installation
- Verify the replacement is IC693CPU374-GU.
- Install the CPU into the correct slot.
- Reconnect Ethernet and communication cables.
- Restore the PLC program if required.
- Verify battery condition and memory retention.
Stage 4 – Commissioning
- Restore system power.
- Verify CPU status LEDs indicate normal operation.
- Confirm Ethernet communication on both ports.
- Test PLC I/O and network communications.
- Perform complete functional verification before returning the machine to service.
- IC693CPU374-GU
- IC693CPU374-GU
Firmware / Software Versions & Upgrade Notes
- Record the installed firmware revision before replacement.
- Back up the PLC project using Proficy Machine Edition before removing the CPU.
- Verify firmware compatibility with installed Series 90-30 I/O modules.
- Restore the original Ethernet configuration after installation.
- Confirm SRTP and Ethernet Global Data (EGD) communications operate correctly before commissioning.
Frequently Asked Questions (FAQ)
Q1. Is this a New Original product?
Yes. When supplied as New Original / New Surplus, the module is unused and not repaired or refurbished. Professional suppliers typically perform serial number verification, visual inspection, and functional testing before shipment.
Q2. What is the primary function of the IC693CPU374-GU?
It serves as the main processor for the Series 90-30 PLC, executing user control programs, managing I/O operations, and providing integrated Ethernet communications.
Q3. How many Ethernet ports are included?
The CPU includes two integrated 10/100Base-T/TX Ethernet ports, enabling programming, HMI connectivity, SCADA communication, and Ethernet Global Data (EGD) networking.
Q4. What communication protocols are supported?
The supports SRTP, Ethernet Global Data (EGD), and SNP/SNPX through the RS-485 interface provided by the compatible power supply.
Q5. Is the still manufactured?
No. The Series 90-30 PLC family has been discontinued, and new modules are generally available only through remaining OEM stock or New Surplus inventory.
Q6. What warranty is typically available?
Professional industrial automation suppliers generally provide a 12 month warranty, including functional testing, ESD-safe packaging, and export-grade shipping.
Q7. What inventory strategy is recommended?
For facilities operating GE Fanuc Series 90-30 PLC systems, maintain as critical spare inventory. Because the platform is discontinued, proactive lifecycle management, supplier diversification, and last-time-buy planning are recommended to ensure long-term system availability.
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