The GE IC693CPU331S central processing unit serves as the primary controller for Series 90-30 programmable logic systems. This CPU module combines a high-speed microprocessor with generous integrated memory for demanding automation applications. The GE IC693CPU331S supports up to 2048 local I/O points and additional remote drops. Its processing architecture includes both user program execution and built-in communication functions. The module executes ladder logic, structured text, and function block diagrams with equal efficiency. This versatility allows the IC693CPU331S to handle complex machine control and sequential operations.
Processing Architecture and Memory Specifications
The GE IC693CPU331S houses an 80 MHz 32-bit RISC processor for rapid program execution. This processor handles Boolean and arithmetic operations at speeds exceeding 0.3 milliseconds per 1000 instructions. The CPU contains 16 KB of high-speed cache memory for storing frequently accessed data. It also includes 64 KB of battery-backed CMOS RAM for maintaining critical process variables. A separate 512 KB of flash memory stores the operating system and user application. The IC693CPU331S provides an additional 32 KB of non-volatile memory for recipe storage and system parameters. The module measures 5.5 inches in height and 2.0 inches in width with a depth of 4.5 inches. This CPU weighs approximately 1.8 pounds, including its integral heat sink.
The GE IC693CPU331S draws 700 milliamps from the +5 VDC backplane supply for its internal logic. An integrated real-time clock tracks calendar dates and time-stamps alarm events. The module uses a replaceable lithium battery for retaining memory during power outages. Its front panel includes a three-position key switch for selecting RUN, STOP, or PROGRAM modes. Four status LEDs indicate CPU health, battery condition, and communication activity.
Communication Ports and Connectivity Options
The GE IC693CPU331S offers a built-in RS-232 port for programming and operator interface connectivity. This port supports SNP and SNP-X protocols at baud rates up to 19.2 Kbps. The CPU also provides a second RS-485 port for multi-drop communication with remote devices. The IC693CPU331S supports Modbus RTU protocol for third-party device integration. Its 15-pin D-sub connector provides access to both programming and serial communication channels.
Core Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | IC693CPU331S |
| Processor Speed | 80 MHz (32-bit RISC) |
| User Program Memory | 512 KB Flash |
| Battery-Backed RAM | 64 KB |
| Cache Memory | 16 KB |
| Non-Volatile Memory | 32 KB |
| Maximum I/O Points | 2048 local |
| Program Execution Speed | 0.3 ms per 1000 instructions |
| Current Draw | 700 mA @ +5 VDC |
| Serial Ports | 1 x RS-232, 1 x RS-485 |
| Protocols | SNP, SNP-X, Modbus RTU |
| Real-Time Clock | Yes (battery-backed) |
| Key Switch | RUN/STOP/PROGRAM |
| Status Indicators | 4 LEDs |
| Dimensions (H x W x D) | 5.5 x 2.0 x 4.5 inches |
| Weight | 1.8 lbs |
| Operating Temperature | 0 to 60°C |
System Integration and Application Scenarios
The GE IC693CPU331S executes control programs in distributed manufacturing and process environments. Its fast scan times support high-speed packaging, assembly, and material handling applications. The IC693CPU331S also performs PID loop control for temperature, pressure, and flow regulation. Its built-in real-time clock enables scheduled maintenance reminders and shift-based production reporting. The GE IC693CPU331S integrates seamlessly with operator panels and supervisory systems. This CPU remains a reliable core component for upgrading Series 90-30 control systems.
Details
| Weight | 0.20 kg |
|---|---|
| Dimensions | 108 × 85 × 50 mm |
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