Description
The GE IC693CPU372-AE is a high-performance CPU module for the Series 90-30 Programmable Logic Controller (PLC) system, featuring built-in Ethernet connectivity and web server capabilities.
Product Overview
The IC693CPU372-AE serves as the central processing unit for GE Series 90-30 PLCs, providing fast program execution, extensive I/O capacity, and integrated networking for industrial automation applications. It supports embedded web diagnostics, multiple programming languages, and flexible rack configurations for scalable control systems.

GE IC693CPU372-AE
Technical Parameters
- Processor: 80386EX 32-bit microprocessor running at 133 MHz
- User Program Memory: 120 KB configurable (Flash and RAM storage)
- %I/%Q Points: 4096 discrete input/output points across 8 racks
- %AI/%AQ Points: 2048 analog inputs, 512 analog outputs
- Boolean Execution Speed: 0.15 ms per 1K of logic
- Communication Ports: 2x Ethernet (10/100 Mbps), 1x RS-485 serial
- Power Consumption: 1.4A at 5 VDC from backplane
- Operating Temperature: 0°C to 60°C (32°F to 140°F)
- Dimensions: Standard Series 90-30 single-slot module (approximately 3.5″ W x 9.5″ H)
- Weight: 0.95 lb (0.43 kg)
- Supported Protocols: SRTP/EGD, Modbus TCP, SNP, Profibus-DP, DeviceNet
Manufacturing Origin
Manufactured by GE Fanuc Automation (now Emerson Automation), with primary production facilities in Charlottesville, Virginia, USA. The Series 90-30 platform serves global industrial automation markets.

GE IC693CPU372-AE
Application Fields
- Factory automation and discrete manufacturing control
- Process control systems with analog and discrete I/O
- Material handling and conveyor systems
- Packaging and assembly line automation
- Water/wastewater treatment facilities
Technical Description
The CPU features a 133 MHz 80386EX processor with integrated floating-point math and 120 KB user memory supporting ladder logic, structured text, and function block programming. Dual Ethernet ports enable SRTP/EGD producer/consumer communication and Modbus TCP client/server operation, while the built-in web server provides browser-based diagnostics, I/O status, and program monitoring. RS-485 serial supports SNP protocol for programming and HMI connectivity. The module supports up to 8 local/remote racks with high-speed backplane communication.
Usage Instructions
- Installation: Insert module into CPU rack slot 1; secure with captive screws
- Power Up: Apply 5 VDC backplane power; verify OK LED illuminates green
- Programming: Use Proficy Machine Edition or Logic Developer software via Ethernet or serial
- Configuration: Set IP address via Station Manager (front panel connector) or programming software
- Network Setup: Configure Ethernet ports for control network and programming access
- Testing: Download program, force I/O points, monitor scan time via web interface
Common Questions
Q: How do I access the built-in web server?
A: Connect to either Ethernet port using the module’s IP address; default login is via programming software configuration.
Q: Can I expand beyond 4096 I/O points?
A: Yes, using remote I/O drops via Genius bus or Ethernet-coupled remote racks.
Q: What’s the firmware update process?
A: Use Proficy Machine Edition with firmware upgrade utility over Ethernet or serial connection.
Q: Does it support floating-point math?
A: Yes, native 32-bit floating-point processing in hardware.
Q: How many racks can one CPU support?
A: Up to 8 racks total (local + remote via expansion modules).
Similar Models
Five comparable Series 90-30 CPU modules:
- IC693CPU370 – Standard Ethernet CPU (96 KB memory)
- IC693CPU371 – Enhanced Ethernet CPU (256 KB memory)
- IC693CPU374 – High-memory version (1 MB user memory)
- IC693CPU350 – Base model without Ethernet
- IC693CPU380 – Latest Series 90-30 CPU with expanded I/O
For GE IC693CPU372-AE and Series 90-30 PLC components, visit www.newplcdcs.com.

