I/O modules

Processor Overview

The GE IC695CPU315 central processing unit serves as the core controller for RX3i PACSystems automation platforms. This high-performance CPU executes ladder logic and structured text programs with exceptional speed. It handles complex machine control and process automation applications effectively. Control engineers choose this processor for its robust memory capacity and scan time.

Memory Architecture and Capacity

The GE IC695CPU315 provides 2 megabytes of user memory for application storage. It includes 10 megabytes of non-volatile flash memory for firmware and program backup. The CPU dedicates 5 megabytes for data tables and register storage. Battery-backed RAM retains variables during power interruptions for seamless recovery. This balanced memory allocation supports large-scale automation projects.

Processing Speed and Scan Performance

The processor executes Boolean instructions in 0.14 milliseconds per 1000 contacts. It handles math operations in 1.2 milliseconds per 1000 floating-point calculations. The typical scan cycle averages 8 milliseconds for medium-sized applications. The CPU uses deterministic execution with configurable watchdog timers. This rapid processing enables precise real-time control responses.

Communication Interfaces and Protocols

The GE IC695CPU315 features one RS-232 serial port for programming access. It includes one RS-485 port for Modbus RTU master-slave communication. The CPU also provides an Ethernet port for TCP/IP networking and remote access. These interfaces support SNTP, FTP, and web server functionality. The integrated Ethernet facilitates seamless plant-wide data exchange.

I/O Capacity and Expansion Capabilities

The processor supports up to 512 discrete I/O points in local racks. It accommodates 128 analog channels for process signal monitoring. The CPU manages remote I/O via Ethernet and serial communication networks. Expansion modules add 1024 additional I/O points through the backplane bus. This scalability suits growing automation requirements.

Removable Storage and Configuration

The CPU includes a removable SD card slot for program backup. Users can store configuration files and application archives on the memory card. The processor reads the card upon power-up for automatic program loading. This feature simplifies firmware updates and machine cloning. The SD card eliminates the need for a programming computer during startup.

Physical Dimensions and Mounting

The GE IC695CPU315 measures 110 millimeters in width and 120 millimeters in height. Its depth totals 85 millimeters including the front face. The unit weighs 0.52 kilograms for straightforward handling. It slides into any slot of the RX3i Universal Backplane. A locking latch secures the CPU firmly in position.

Power Consumption and Heat Dissipation

The CPU draws 500 milliamperes from the 5 V DC backplane supply. It consumes an additional 250 milliamperes from the 3.3 V DC rail. Total power dissipation reaches 5 watts under full processing load. The integrated heat sink passively manages thermal conditions. This efficient design eliminates active cooling requirements.

LED Status Indicators and Diagnostics

The front panel features five LEDs for operational status monitoring. A green RUN LED indicates normal program execution. A red FAULT LED signals hardware or software errors. The STATUS LED displays communication and configuration states. These indicators provide immediate visual feedback for troubleshooting.

Environmental Specifications

The processor operates between 0°C and 60°C ambient temperature. It withstands 5% to 95% non-condensing humidity conditions. The CPU meets UL 508, CSA, and CE safety standards. The module carries an IP20 protection rating for indoor installations. The conformal-coated PCB resists moisture and airborne contaminants.

Technical Specifications Table

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