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IC695RMX128 Wiring

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  • IC695RMX128
  • IC695RMX128 Wiring

Product Description

The IC695RMX128 is a Redundancy Memory Xchange module from the GE Fanuc RX3i Series. See specifications for this unit on IC695RMX128's website page.

Technical Specifications

Module Type:  Relective Memory 
Number of Slots:   1 (Single Slot)
User Memory: 128 Mbytes
Comm Ports: N/A
Protocol Support:   None Required
Internal Power: 580 mA @ 3.3VDC, 220 mA@ 5VDC


GE Intelligent Platforms / GE Fanuc GE RX3i PacSystem

SKU 2174263  UPC 0799705798694

Part Number: IC695RMX128 / ic695rmx128
Mfr/Brand Name: GE Automation
Mfr Number: IC695RMX128 / ic695rmx128
Type: Redundant Memory Xchange Module

Troubleshooting and Product Information for IC695RMX128

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

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Other IC695RMX128

Available Revisions:

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1C695RMX128 , GEFIC695RMX128 , CIMIC695RMX128


Packet size

Dynamic, automatically controlled by RMX128 module

User memory


Input power

(from RX3i power supply)

580 mA @ +3.3VDC

220 mA @ +5VDC


        Fiber-optic LC type, conforms to IEC 61754-20

        Zirconium ceramic ferrule

        Insertion loss: 0.35 dB (maximum)

        Return loss: -30dB

Refer to the PACSystems RX3i System Manual (GFK-2314), for product standards and general specifications.

Troubleshooting IC695RMX128

Troubleshooting information is available on IC695RMX128's website page; it also includes a datasheet user-manual and a wiring diagram.

Repair your IC695RMX128

PDF Supply can repair your IC695RMX128 in 3-5 business days. And PDF Supply stands by all of its repairs with a 1 year customer satisfaction warranty.


Reflective Memory -- PC RFM to PACSystems RMX


There is one red LED ON at the PC RFM card, but no communications with the PLC IC698RMX016 or IC695RMX128 modules.

After installing the Reflective Memory module and necessary optical cables, the PLC RMX module may still not be communicating with the PC RFM card.


The PLC Reflective Memory Module (RMX016 and RMX128) can be configured as a Redundancy Only Link, or a Communications Only Link. They can not function as both at the same time.

There needs to be a slight change to the PLC RMX Module default configuration:

- Open the project in Proficy Machine Edition
- Go to HW configuration
- Locate RMX016 or RMX128 module
- Double-click to open its properties
- Locate "redundant link" entry
- Change this to "Disabled" to allow external communications
- Download the HW configuration to the PLC

The RMX module should now be working as an "ordinary" CMX module, which will now communicate with the RFM card in the PC.

Note that you should purchase a CMX card for PLC communications, as the RMX is designed to support PLC CPU redundancy. However it may be used as described above where CMX stock is not available or to maintain 1 part number for interchangeable spares.


Customer Questions and Answers

  • Question:  What is an IC695RMX128?  Answer:  The IC695RMX128 is a Redundancy Memory Xchange module from the GE Fanuc RX3i Series. 
  • Question:  What does IC695RMX128 provide?  Answer:  This module operates as a dedicated link between CPUs in an RX3i Hot Standby CPU Redundancy system.  It also provides a path for transferring data between the 2 redundancy CPUs in the redundant system. 
  • Question:  What is reflective memory technology/a reflective memory network?  Answer:  A reflective memory network can contain up to 256 nodes. Each node can be any reflective memory device that is compatible with the 5565 family. So, when data is written to 1 node, all nodes on the network are automatically updated with the new data. 
  • Question:  How are the nodes in a reflective memory network connected?  Answer:  Each node is connected in a daisy-chained loop using fiber optic cables. The transmitter of the first node is tied to the receiver of the second which, is tied to the receiver of the third, and so on, until the loop is completed back at the receiver of the first node. 
  • Question:  When used as a node, what does the IC695RMX128 do?  Answer:  When used as a node on a reflective memory network, the RMX module provides deterministic sharing of data among PLCs and other computing devices on a high-speed fiber optic network. 
  • Question:  When not in use, to which module is the IC695RMX128 functionally identical?  Answer:  IC695RMX128.
  • Question:  What should I do if my IC695RMX128 is not working properly?  Answer:  Your IC695RMX128 may need repair.

For more information on the IC695RMX128 Redundancy Memory Xchange Module of the GE Fanuc RX3i Series, please see the Datasheet User-Manual.

Release History


Firmware Version





Jul. 2015

This change just further enhances the designs’ resistance to the rare condition of corruption during a memory read from occurring.



Sep. 2013

Hardware update to resolve a component obsolescence issue. No changes to features, functions or compatibility.



Jul. 2013

This update prevents a rare memory read data corruption issue from occurring.



Feb. 2013

This firmware update enhances the data corruption self-correcting mechanism to provide additional detection and correction capability for memory reads.



Dec. 2012

This hardware update addresses a rare condition in which some units may exhibit an impedance between system 0V and earth ground that is lower than the designed value.



Oct. 2012

The mechanism used to report the memory read data corruption via the parity error LISR bit and interrupt has been removed in version 1.06 in favor of a new self-correcting mechanism that is transparent to the user application and handled internally by the CPU (beginning with CPUv7.17).



Aug. 2011

Increases the maximum packet size that can be accepted and processed to 68 bytes when configured to operate as a CMX128 module.

Adds the ability to detect and correct a rarely occurring condition of corruption in data read operations.



Feb. 2009

Initial release.


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