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RX3i BEM321 Specialty

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SKU 2175462  UPC 0799705793460


PDF Electric and Supply is not an authorized distributor for GE Fanuc Emerson



3 In Stock

✓  2 Year PDF Supply Warranty

*What is Remanufactured?

Repair Service


5-10 Days

✓  2 Year PDF Supply Warranty

*What is Fast Repair?

Other Available Revisions for the IC694BEM321 IC694BEM321AIC694BEM321-LT

Common misspellings:
  • 1C694BEM321
  • IC69ABEM321
  • IC6948EM321
  • IC694BEM32l
  • IC694BEM321

Product Description

IC694BEM321 is a PACSystems RX3i master controller module that provides an I/O Link communications with up to 16 slaves if needed. This module acts as a master on a proprietary GE I/O Link. The master in the setup can receive 1024 discrete inputs from slaves and send up to 1024 discrete outputs.

The module can be installed on any available I/O slot in the RX3i or Series 90-30 system. However, for the best overall performance, it should be installed in the main backplane or in an expansion backplane. The availability of the power supply will determine the maximum number of I/O links that can be installed. If multiple I/O link master modules are in the same PLC system, then they must be placed on separate I/O links to operate.

A fuse protects the +5 volt signal pins that are used by the Optical Adapter cable and is replaceable by a 0.5A fast-blow fuse if needed. This module has three separate LEDs that show both communicating and operating status. The Link Restart pushbutton is available to restart the operation of the link if failure occurs; however, pushing the Link Restart while the link is operating has no effect on the system. If a failure does occur, all slaves must be power cycled before using Link Restart. The IC694BEM321 has a front module with one 20 pin Honda-type connector. This is used for the connection to the first slave on the I/O link. All signals are RS422/485 compatible on this unit.

Technical Specifications

Module Type: I/O Link Interface
Number of Slots: 1 (single slot)
Backplane Support:  Universal Backplane
I/O Points: Up to 1024 inputs and 1024 outputs
Communication Ports:  (1)  RS485/422 



Technical Information


Module type      PACSystems RX3i controller module, providing I/O Link communications with up to 16 I/O Link slaves.

I/O Points           Up to 1024 inputs and 1024 outputs

+5Vdc current required      without Optical Adapter connected: 415mA

                                              with Optical Adapter: 615mA

Host CPUs
â–ª PACSystems RX3i CPUs
â–ª Series 90-30 CPUs (models 311, 313, 321, 323, 331, and 341): release 4.4 or later, and all versions of the CPU models 350, 351, 352, 360, 363, and 364
â–ª Series 90-30 Hand-held Programmer (HHP)


Troubleshooting IC694BEM321

Troubleshooting information is available on IC694BEM321's website page; it also includes a datasheet user-manual and a wiring diagram.


Repair your IC694BEM321

PDF Supply can repair your IC694BEM321 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 IC694BEM321?  Answer:  The IC694BEM321 is an I/O Link Interface Master Module from the GE Fanuc RX3i Series.
  • Question:  What does IC694BEM321 do for the RX3i system?   Answer:  This module allows a PACSystems RX3i controller to act as a master on a proprietary Fanuc I/O Link.
  • Question:  How does the IC694BEM321 relate to the slaves?  Answer:  This module provides I/O Link communications with up to 16 slaves.  The master can receive 1024 discrete inputs from slaves and send up to 1024 discrete outputs. 
  • Question:  How many modules can be located in the main PACSystems RX3i backplane?  Answer:   The maximum number of master modules installed on the backplane depends on the power that is available from the power supply.
  • Question:  Where must IC694BEM321 be located?  Answer:  IC694BEM321 can be installed in any available backplane slot.
  • Question:  What should I do if my IC694BEM321 is not working properly?  Answer:  Your IC694BEM321 may need repair.

For more information on the IC694BEM321 I/O Link Interface Master  Module of the GE Fanuc RX3i Series, please see the Datasheet User-Manual.

 Coming soon

ST. LOUIS, Feb. 1, 2019 – Emerson today announced it has completed the purchase of Intelligent Platforms from General Electric.
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