GE IC693CPU331 CPU Module: Technical Specs & Overview
GE IC693CPU331 Overview
The GE IC693CPU331 is a single-slot modular CPU from the Series 90-30 PLC family. It is designed for industrial automation tasks that require reliable control of multiple I/O points. This processor uses an 80188 microprocessor running at 10 MHz and provides a typical scan rate of 0.4 milliseconds per 1K of Boolean logic. The GE IC693CPU331 comes with 16 Kbytes of user program memory and supports up to 512 discrete inputs, 512 discrete outputs, 128 words of analog input, and 64 words of analog output. The built-in serial port supports SNP slave and SNP-X slave protocols, making it easy to connect to programming devices or HMIs.
Key Technical Specifications
The IC693CPU331 module draws 350 mA from the backplane at +5 VDC and fits into any CPU baseplate (5-slot or 10-slot) in slot 1. The operating temperature range is 32 to 140 degrees Fahrenheit. It features internal memory structures that include 1280 bits of discrete global memory, 1024 bits of internal coils, 256 bits of temporary coils, 128 bits of system status references, 2048 words of register memory, and 16 words of system registers. The unit supports 680 timers/counters and shift register instructions. The default memory type is RAM, with optional EPROM or EEPROM for program storage. For I/O expansion, the GE IC693CPU331 supports up to four expansion baseplates or four remote I/O baseplates.
Connectivity and Protocols
The built-in serial port utilizes the connector on the PLC power supply and supports SNP slave and SNP-X slave protocols. For other protocols such as SNP master, SNP-X master, CCM, and RTU slave, a separate CMM module is required. An AD693CMM301 module adds two additional serial ports. An SLP (State Logic Processor) can be used with this CPU to provide multi-tasking control.
Practical Applications
The GE IC693CPU331 is ideal for mid-sized automation systems that need a balance of discrete and analog I/O capability. Its modular design allows easy integration into existing Series 90-30 installations. The fast scan rate and generous memory make it suitable for applications requiring quick logic execution and moderate data handling. The override function and battery-backed clock add flexibility for maintenance and time-stamped events. Whether you are upgrading an older system or building a new control panel, the IC693CPU331 offers a cost-effective solution with proven reliability.
Conclusion
The GE IC693CPU331 modular CPU delivers dependable performance for industrial automation engineers. With its 10 MHz processor, 16 KB memory, and support for 512 I/O points, it meets the needs of many machine and process control tasks. The SNP slave protocol simplifies communication, and the expandable architecture ensures you can grow your system as required. For procurement professionals, the IC693CPU331 represents a stable, well-documented option within the GE Series 90-30 family.