GE IC693CPU372 PLUS Central Processing Unit

Technical Specifications
Product Type: Central Processing Unit (CPU)
Compatible System: GE Fanuc Series 90-30 PLC
Slot Occupancy: Single slot, must occupy Slot 1 in the local rack
Processor: AMD SC520 at 133 MHz
Processor Architecture: 32-bit
Boolean Execution Speed: 0.15 μs per instruction
User Memory: Up to 240 KB
Floating Point Math: Supported
Discrete I/O Capacity: 2048 total points
Analog I/O Capacity: Maximum 32,640 analog input words and 32,640 analog output words
Ethernet Ports: Two 10BaseT / 100BaseTX RJ-45 ports with auto-sensing and Auto-MDIX
Serial Port: RS-232 Station Manager port, 1200 – 115200 bps
Supported Protocols: Modbus TCP/IP (Server and Client), SRTP, EGD (Ethernet Global Data), SNP, Modbus RTU
Power Supply: 5 VDC from backplane; power consumption approximately 7.4 W
LED Indicators: RUN, OK, FAULT, BATT, LINK/ACT
Front Panel Controls: RUN/STOP/OFF mode selection switch; Ethernet Restart pushbutton
Operating Temperature: 0°C to 60°C
Storage Temperature: -40°C to +85°C
Relative Humidity: 5% to 95% (non-condensing)
Product Lifecycle Status: Obsolete / Legacy (Emerson acquired GE Intelligent Platforms in 2019)

Key Features
Embedded Ethernet Connectivity: Two built-in 10/100 Mbps Ethernet ports eliminate the need for separate Ethernet interface modules, saving slot space and hardware cost .
Internal Ethernet Switch: Both ports share a single IP address and function as a switch, supporting daisy-chain and Device Level Ring (DLR) network topologies without additional switches .
Multi-Protocol Support: Natively supports Modbus TCP/IP (Server and Client), SRTP, and EGD protocols, enabling direct data exchange with SCADA systems, HMIs, and other PLCs .
High-Speed Processing: A 133 MHz AMD SC520 processor with 0.15 μs Boolean instruction execution delivers fast logic processing for complex control applications .
Floating Point Math Capability: Hardware support for floating-point calculations allows implementation of complex algorithms and mathematical functions .
Web-Based Monitoring: Supports basic remote PLC monitoring from standard web browsers, providing simplified system access .
Flexible Memory Configuration: 240 KB of battery-backed RAM stores user programs and data; supports optional flash memory cards for non-volatile program storage .
Comprehensive Diagnostics: Front-panel LED indicators display RUN status, system health (OK), fault conditions, battery status, and Ethernet link activity for rapid troubleshooting .
Programming Software Compatibility: Fully configurable via Proficy Machine Edition (PME) software with PLC Logic Developer .

Application Scenarios
Factory Data Acquisition and SCADA Integration: Directly connects to plant Ethernet networks to transmit production data, temperature readings, and alarms to MES and supervisory systems via Modbus TCP, eliminating the need for external communication gateways .
Distributed Control Systems: Implements high-speed data exchange between multiple PLCs using EGD protocol, replacing traditional hardwired interlock signals and reducing field wiring complexity .
Manufacturing Automation: Controls production lines, robotic workstations, and material handling systems in automotive, packaging, and general manufacturing environments .
Process Control: Manages continuous processes in chemical, petrochemical, pharmaceutical, and food and beverage industries .
Water and Wastewater Treatment: Controls pumps, valves, and treatment processes in municipal and industrial water management facilities .
Power Generation and Energy Management: Serves as the central controller in power plant balance-of-plant systems and energy distribution applications .
Remote Monitoring Systems: Enables centralized monitoring and management of geographically distributed equipment and field devices .

Installation and Configuration Notes
The CPU module must be installed in Slot 1 of the local rack . Both Ethernet ports share a single IP address and act as an internal switch; the relevant protocols must be enabled in the Proficy Machine Edition hardware configuration . The BATT LED illuminates when the backup battery requires replacement; failure to replace it risks program and data loss . The FAULT LED flashes when a watchdog timeout or I/O configuration mismatch is detected . Up to three additional Ethernet interface modules (IC693CMM321) can be installed in the same backplane for expanded connectivity .