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IC695CMU310 Wiring

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  • IC695CMU310
  • IC695CMU310 Wiring

Product Description

The IC695CMU310 is a Max-ON Hot-Standby Redundancy CPU module from the GE Fanuc RX3i Series.  This module provides Hot-Standby CPU redundancy using two RX3i systems.  See specifications for this unit on IC695CMU310's website page.

Technical Specifications

Module Type: Central Processing Unit
Number of Slots: 1 (single slot)
Backplane Support:  Universal Backplane
Protocol Support: Modbus RTU Slave, SNP, Serial I/O     
Communication Ports:  (2) Isolated RS-232 and RS485
Internal Power: 1.0A @ +5 VDC, 1.25A @ +3.3 VDC

GE Intelligent Platforms / GE Fanuc GE RX3i PacSystem

SKU 2177359  UPC 0449397639798

RX3i Redundant High Availability CPU with two built-in serial ports. Supports the Max-ON IC695C IC695CM IC695CMU

Troubleshooting and Product Information for IC695CMU310

Download product information, troubleshooting guides and operation manuals to get your PLC operational.

Reman IC695CMU310
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Repair Your IC695CMU310
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Other IC695CMU310

Available Revisions:

Confirm Your Revision Number

1C695CMU310 , GEFIC695CMU310 , CIMIC695CMU310


Battery: Memory retention

RX3i CPU Lithium Smart Battery, IC695ACC302 (recommended), Series 90-30 Lithium Battery Pack, IC693ACC302, or IC698ACC701 Smart Coin Cell Battery Pack

Program storage

Up to 10 Mbytes battery-backed RAM; 10 Mbytes non-volatile flash user memory

Power requirements

+3.3 VDC: 1.25 Amps nominal

+5 VDC: 1.0 Amps nominal

Operating Temperature

0 to 60°C (32°F to 140°F)

Floating point


Boolean execution speed

0.195ms per 1000 Boolean instructions, typical

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 90-30-style serial

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 10 Mbytes

Troubleshooting IC695CMU310

Troubleshooting information is available on IC695CMU310's website page; it also includes a datasheet user-manual and a wiring diagram.

Repair your IC695CMU310

PDF Supply can repair your IC695CMU310 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 IC695CMU310?  Answer:   The IC695CMU310 is a Max-ON, Hot-Standby, Redundancy Central Processing Unit from the GE Fanuc RX3i Series.
  • Question:  What does IC695CMU310 provide?  Answer:  This CPU provides Hot-Standby CPU Redundancy using 2 RX3i systems. 
  • Question:  How do the redundant controllers exchange operating data?  Answer:  They exchange operating data by way of 1 or 2 dedicated Ethernet LANs.
  • Question:  Of what does each RX3i system in a Max-ON application consist?  Answer:
    • The Max-ON CPU (IC695CMU310)
    • An RX3i Universal Backplane (IC695CHS0xx)
    • An RX3i power supply (IC695PSxxxx)
    • 1 or more RX3i Ethernet modules (IC695ETM001)
    • Max-ON application software
    • Optional Series 90-30 expansion backplanes
    • PACSystems RX3i and/or Series 90-30 modules, as appropriate for the application
  • Question:  Is IC695CMU310 compatible with a wide range of RX3i and Series 90-30 modules, backplanes, and other equipment?  Answer:  Yes!
  • Question:  Max-ON redundancy applications include what?  Answer:
    • Fuel loading
    • Standby power generation
    • Boiler systems
    • Manufacturing systems
  • Question:  What should I do if my IC695CMU310 is not working properly?  Answer:  Your IC695CMU310 may need to be repaired.

For more information on the IC695CMU310 Max-On, Hot-Standby, Redundancy Central Processing Unit of the GE Fanuc RX3i Series, please see the Datasheet User-Manual.

Catalog Number





Corrects the behavior of the Logic Driven Read/Write to Flash service requests, SVC_REQ56 and SVC_REQ 57.



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.



Provides for OEM protection in flash-based systems that do not use a battery. For additional problems resolved, see GFK-2420N.



Adds User Defined Types, Variable Indexed Arrays, Logic Driven Write to Flash, and Backplane Operations Controller Enhancement features. See GFK-2420M for details and problems resolved.



Enables support functionally identical to the IC695CMX128 for the IC695RMX128.



Corrects the problem described in GFK-2420K.



Supports the IC695PMM335 PACMotion Multi-Axis Motion Controller. Provides other new features and corrects the problems listed in GFK-2420K.



Supports Run-mode store of EGD. Adds support for LREAL data type.



Corrects problems described in GFK-2420G.



Fixed an issue where certain IC694/IC693 modules in the main backplane did not transition to stop mode after a “Loss of Module” fault was logged.



Supports Scan_Set_IO, Quality Function Blocks, Optional UDF Parameters, IEC Transitionals, SNPT Network time sync.



Supports the RX3i Serial Communications Modules IC695CMM002 and CMM004.






Supports eight ETM modules in main backplane






Initial Release

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These “New Surplus” units are a great cost saving alternative. This product is sealed in the original manufacturer’s packaging with all sub-assemblies and documentation. May indicate older date code. Comes with a PDF Supply 3-year warranty.

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Surplus New - New unused and includes all sub-assemblies and documentation. Product may ship in manufacturer or PDF Supply packaging. May indicate older date code. Includes a PDF Supply 3 Year Warranty.

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What is Reconditioned?

Reconditioned products from PDF Supply are a cost-effective alternative to new and obsoleted PLC products. Every part is reconditioned down to the circuit board level and updated to the latest revision. All parts are thoroughly inspected and hand-cleaned before being functionally tested in a fully configured system.

Our Reconditioned Products always come with a PDF Supply 2-Year Warranty.

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What is a Verified Substitute?

A verified substitute new product is a "drop in" replacement designed with identical specifications as the OEM product. It will meet all electrical and dimensional charactertics at a substanstially reduced price.

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We stand behind our prices with a lowest price guarantee. If you find a legacy GE PLC part advertised for less on an authorized GE PLC distributor website, simply contact us and send us a link to the lower advertised price. We will match that price and ship overnight FREE. The item must be in stock, in similar condition and be able to ship same day.

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