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Key Technical Specifications
- Product Model: IC695CPU315
- Manufacturer: GE Automation (Emerson)
- System Family: RX3i
- Processor: 300 MHz Intel-compatible CPU
- User Memory: 2 MB program + 2 MB data (non-volatile flash)
- Execution Speed: 0.06 µs per Boolean instruction
- Integrated Communication Ports: Two 10/100 Mbps Ethernet ports (one for programming/I/O, one for dedicated messaging or HMI)
- Supported Protocols: SRTP, Modbus TCP, Ethernet Global Data (EGD), PROFINET IO Controller (with optional license)
- Redundancy Support: Full hot-standby CPU redundancy (with IC695RMX128 module)
- I/O Capacity: Supports up to 4,096 local and remote I/O points
- Motion Control: Built-in support for up to 32 axes via SERCOS III or Pulse/Direction modules
- Programming Environment: Proficy Machine Edition (IEC 61131-3 compliant)
GE IC695CPU315
Core Performance and Selection Advantages
The GE IC695CPU315 delivers significant performance improvements over earlier RX3i CPUs and competitive mid-range PLCs. Its 300 MHz processor enables fast scan cycles even in complex applications involving PID loops, data logging, and inter-controller messaging. Compared to the IC695CPU310 (133 MHz), it offers more than double the Boolean execution speed and larger memory capacity, reducing the need for external storage or program segmentation.
A key functional advantage is its dual integrated Ethernet ports—eliminating the need for a separate communication module in most architectures. One port handles I/O and programming traffic, while the second can be dedicated to HMI, SCADA, or peer-to-peer data exchange via EGD, improving network determinism. The CPU also includes native support for motion control without requiring a co-processor, enabling coordinated axis control directly within the logic application.
From a total cost of ownership (TCO) perspective, the IC695CPU315 reduces engineering time through unified programming in Proficy Machine Edition, which supports structured text, ladder logic, and function block diagrams in a single project. The elimination of gateway hardware for Ethernet-based protocols, combined with reduced cabinet space and simplified cabling, further lowers installation and maintenance costs over the system lifecycle.
GE IC695CPU315
System Integration and Expandability
The IC695CPU315 is programmed exclusively in GE’s Proficy Machine Edition (PME), a modern IEC 61131-3 development environment that supports version control, online change, and comprehensive diagnostics. PME’s library management and reusable code templates accelerate development and improve standardization across multi-machine deployments.
In terms of networking, the CPU natively supports SRTP (GE’s real-time protocol) for I/O and peer messaging, Modbus TCP for third-party device integration, and EGD for high-speed data sharing between controllers. With an optional software license, it can operate as a PROFINET IO Controller, enabling direct connection to drives and I/O from multiple vendors. OPC UA server functionality is available via add-on modules or software extensions, facilitating secure data exchange with MES and cloud platforms.
The RX3i platform offers extensive expandability: the CPU can manage up to eight local or remote racks via Genius or Ethernet I/O, supporting thousands of digital and analog points. Hot-standby redundancy is achieved with the IC695RMX128 redundancy module, providing seamless failover for critical processes. Additional functionality—such as high-speed counters, safety I/O (via IC695CRU320), or serial communications—can be added through modular I/O cards, allowing the system to scale precisely to application requirements without over-engineering.
