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RX3i CPU315 CPU Processor

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SKU 2174026  UPC 041082372111




1 In Stock

✓  2 Year PDF Supply Warranty

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1 In Stock

✓  2 Year PDF Supply Warranty

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Technical Specifications for IC695CPU315

ManufacturerGE Fanuc
SeriesRX3i PACSystems
Part NumberIC695CPU315
Product TypeCPU
Program Storage20 MB of RAM, 20 MB of flash memory
Power Requirements3.3V DC and 1 Amp, 5V DC and 1.2 Amp
Embedded Communications PortsRS-232, RS-485
Serial Protocol SupportModbus RTU Slave, SNP, Serial I/O protocols
Program BlocksUp to 512 program blocks
Operating Temperature0-60 degrees Celsius

Product Description

The IC695CPU315 is a 1 GHz Central Processing Unit from the GE Fanuc PACSystems RX3i Series. It has an Intel Celeron-M  microprocessor with 20 MB of user memory (also known as random access memory or RAM) and 20 MB of flash storage memory. As a programmable controller, the  IC695CPU315 is capable of up to 32K I/O operations per second. It supports up to 512 program blocks at a maximum size of 128 KB per block. The IC695CPU315 communicates with I/O and Intelligent Option modules using a dual backplane bus.


RX3i CPUs like this one are designed for real-time control of machines, processes, and material handling systems. They can be programmed in C, or in three of the five programming languages recognized by the IEC (International Electrotechnical Commission). From the IEC language list specifically, you can program IC695CPU315 in Ladder Logic (Ladder Diagram), Structured Text, or Function Block Diagram languages. Only the Sequential Function Chart and Instruction List language options do not apply.


IC695CPU315 uses floating point algorithms, and its firmware can be upgraded within the system. Auto-located Symbolic Variables can use as much memory as they need, up to the full 20 MB capacity of user memory. The CPU comes factory-configured with two front=facing ports, an RS-485 serial port and an RS-232 serial port. Accordingly, you have both a 9-pin connector and a 15-pin connector. The CPU supports the SNP, Serial I/O, and Modbus Slave and Master serial protocols. IC695CPU315 also supports most of the older GE Fanuc Series 90-30 modules and expansion racks.

Technical Specifications

Processing Speed: 1 GHz
CPU Memory: 20 Mbytes
Floating Point: Yes
Serial Ports: 2
Serial Protocols: SNP, Serial I/O, Modbus Slave and Master
Embedded Comms:   RS-232, RS-486


The IC695CPU315 Central Processing Unit or CPU belongs to PACSystems RX3i series of products designed by GE Fanuc. It has 20 MB of battery-backed RAM, 20 MB of non-volatile flash user memory, 3.3 Volts DC and 1 Amp or 5 Volts DC and 1.2 Amps of power requirement, embedded communication options, a 0 to 60 degrees Celsius operating temperature range, and up to 512 program blocks. It provides a dual backplane to efficiently communicate with I/Os. This module offers 2 serial communication ports that are the RS-232 and RS-485 ports. A rack-based Ethernet interface module can be used to establish the Ethernet communication. The IC695CPU315 Central Processing Unit can be programmed using a variety of languages such as ladder diagram, structured text, function block diagram, or C programming language.  


The IC695CPU315 Central Processing Unit is compatible with a programmer and HMI devices for controlling and monitoring the whole plant. It comes with a dual backplane which provides a high-speed serial bus and an RX3i PCI. The typical Boolean execution speed of the module is 0.047 milliseconds per 1000 Boolean instructions. It is electrically compliant with the PCI 2.2 standards. The main features of the IC695CPU315 CPU include access to bulk memory, configurable data and program memory, in-system upgradeable firmware, and embedded communication with serial protocol support. It is compatible with most Series 90-30 modules, communication modules, and expansion racks. When installing the battery, make sure to install the CPU in the rack and power on the rack before connecting the battery. This module is used to perform the real-time control of machines and processes in the plant.

Technical Information


CPU Performance

For CPU315 performance data, refer to Appendix A of the PACSystems CPU Reference Manual, GFK-2222W or later.

Battery: Memory retention

For battery selection, installation and estimated life, refer to the PACSystems RX3i and  RX7i  Battery  Manual, GFK-2741

Program storage

Up to 20 MB of battery-backed RAM

20 MB of non-volatile flash  user memory

Power requirements

+3.3 Vdc: 1.0 Amps nominal

+5 Vdc: 1.2  Amps nominal

Operating Temperature

0 to 60°C (32°F to 140°F)

Floating point


Time of Day Clock accuracy

Maximum drift of 2 seconds per day

Elapsed Time Clock (internal timing) accuracy

0.01% maximum

Embedded communications

RS-232, RS-485

Serial Protocols supported

Modbus RTU Slave, SNP, Serial I/O


Dual backplane bus support: RX3i PCI and high-speed serial bus

PCI compatibility

System designed to  be electrically compliant with PCI  2.2  standard

Program blocks

Up  to 512  program blocks. Maximum size for a  block is 128KB.


%I and %Q: 32Kbits for discrete

%AI and %AQ: configurable up to 32Kwords

%W: configurable up to the maximum available user RAM Symbolic: configurable  up to  20 Mbytes


Troubleshooting IC695CPU315

Troubleshooting information is available on IC695CPU315's website page; it also includes a datasheet, a user manual, and a wiring diagram.


Repair your IC695CPU315

PDF Supply can repair your IC695CPU315 in 3-5 business days. And PDF Supply stands by all of its repairs with a 1 year customer satisfaction warranty.

Customer Questions and Answers

  • Question:  What is an IC695CPU315?  Answer:  The IC695CPU315 is a Central Processing Unit from the GE Fanuc RX3i Series. 
  • Question:  What does IC695CPU315 do?  Answer:  This CPU can be used to perform real time control of machines, processes, and material handling systems. 
  • Question:  How does IC695CPU310 communicate with the programmer and HMI devices?  Answer:  The IC695CPU315 communicates via a serial port using SNP Slave protocol. 
  • Question:  How does IC695CPU315 communicate with I/O and Intelligent Option modules?  Answer:  The IC695CPU315 communicates over a dual backplane bus. 
  • Question:  What does that bus provide?  Answer:
    • High-speed, PCI backplane for fast throughput of new advanced I/O.
    • Serial backplane for easy migration of existing Series 90-30 I/O.
  • Question:  What are some of the features of IC695CPU315?  Answer:
    • Contains 20 Mbytes of battery-backed user memory and 20 Mbytes of non-volatile flash user memory. 
    • Provides access to bulk memory via reference table %W. 
    • Configurable data and program memory.
    • Programming in Ladder Diagram, Structured Text, Function Block Diagram, and C.
    • Supports auto-located Symbolic Variables that can use any amount of user memory.
    • Reference table sizes include 32Kbits for discrete %I and %Q and up to 32K words for each analog %AI and %AQ. 
    • Supports most Series 90-30 modules and expansion racks.
    • Supports up to 512 program blocks. Maximum size for a block is 128KB.
    • In-system upgradeable firmware.
    • 2 serial ports- RS-485 serial port and RS-232 serial port.
    • Ethernet communications via the rack-based Ethernet Interface module (IC695ETM001).
    • Time Synchronization to SNTP Time Server on Ethernet network when used with Ethernet Release 5.0 or later module.
  • Question:  What should I do if my IC695CPU315 is not working properly?  Answer:  Your IC695CPU315 may need repair.

For more information on the IC695CPU315 Central Processing Unit of the GE Fanuc RX3i Series, please see the Datasheet User-Manual.


Catalog Number

Firmware Revision







July 2016

Adds support for the Remote Get HART Device Information COMMREQ. This allows the

user application to retrieve information from a HART device connected to an RX3i Analog module via an IC695PNS001 RX3i PROFINET Scanner (PNS).





Apr 2016

Several security enhancements were made to various PACSystems Controllers to harden the product against an attacker with local area network access. Refer to https://ge-






Nov 2015

Supports extended PROFINET device Subslot Numbers in order to support additional 3rd

party devices. The maximum Subslot Number for PROFINET devices has been increased from 255 to 21845.





Add support for HART®  Pass Through feature. Refer to PACSystems RX3i HART Pass

Through User Manual, GFK-2929.








May 2014

Adds support for IC695RMX228 128 MB Reflective Memory Module with Single Mode Transceiver.

Adds ability to read reflective memory status bits for IC695CMX128, IC695RMX128, and IC695RMX228 (reflective memory modules).

Resolves issue of Serial I/O Read Bytes COMMREQ (4402) always returning error code 100Dh in the event of an error, regardless of the error.






Feb 2014

Adds support for the new IC695ECM850 (IEC 61850 Ethernet Communication Module), which operates as an IEC 61850 Client and provides connectivity to IEC 61850 Server devices.

Resolves issue of CPU halting when the inner FOR_LOOP's Start is greater than End input in a nested FOR_LOOP.





Adds remote PROFINET IO to PACSystems RX3i Hot Standby Redundancy systems.

Resolves issue with LREAL operands within complex relational expressions.






May 2013

Corrects an issue in versions 7.15 – 7.70 that required setting OEM lock in Enhanced Security in order to preserve the OEM lock through a power cycle.

Adds support for RX3i CMX/RMX modules version –CG (hardware version -Cx with

firmware version 2.00 and later).





Adds support for the following new modules: IC694MDL758, IC695CNM001 and







Nov 2012

Adds the ability to monitor a new interface between the CPU and the CMX/RMX Memory Xchange modules (CMX/RMX Memory Xchange module firmware 1.06 and later). In the rare occasion the CMX/RMX Memory Xchange module detects a failure in a read operation, the CMX/RMX Memory Xchange module will indicate the last read is invalid.

The CPU will then retry the previous read operation.






Jul 2012

Adds native support for the new Power Sync and Measurement module (IC694PSM001) and resolves several issues. Also introduces new features to augment security in the CPU firmware and Proficy Machine Edition software. For details, see New Features and

Enhancements and Problems Resolved in Release 7.15 in PACSystems RX3i CPU IC695CPU315 IPI, GFK-2586L.





Jun 2012

Corrects an issue where executing a Run Mode Store, displaying the Proficy Machine

Edition Show Status window, or requesting data using the PACSAnalyzer tool could cause discrete output modules to unexpectedly change state momentarily (up to one PLC scan).





Corrects issues with Logic Write to Flash (Service Request 57).



Oct 2011

Hardware revision to correct an issue with the RS-485 (COM2) serial port.





Adds support for the PROFINET Controller module, IC695PNC001.





Corrects the behavior of the Logic Driven Read/Write to Flash service requests,

SVC_REQ56 and SVC_REQ 57.





Implements a hardware design update that improves the noise immunity of the CPU

module during power up from flash operations.





Dec 2010

Introduces support for new modules, enhancements to the Modbus RTU protocol,

improved Run signal handling in the expansion rack and other improvements. Resolves several problems found in earlier releases.





Initial release. For details, see PACSystems RX3i CPU IC695CPU315 IPI, GFK-2586.

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