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  • 5.00 (4)
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The Reliance Electric 45C988 is a Shark XL Remote Master Module. The 45C988 can be placed in a Shark XL PLC rack along with a power supply and processor.



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  • Part Number: 45C988
  • SKU: 45C988RE
  • Manufacturer: Reliance Electric
  • Series: Shark XL

45C988 Technical Specifications

Manufacturer Reliance Electric
Series Shark XL
Part Number 45C988
Product Type PLC - Programmable Logic Controller
Product Descriptions Remote Master Module
Made In United States
Weight 11 ounces
Shipping Dimensions 12 x 8 x 8 inches

Product Description

The 45C988 device is a remote master module that Reliance Electric designed to be a part of the Shark XL series. The 45C988 remote master module is usually available in our stock even though it has had its production halted by the original manufacturer. You can verify that this product is available in our inventory by searching for it on our website or by contacting us.

The 45C988 remote master module is designed to be used in conjunction with the 45C989 remote target module to allow I/O to be installed inside of remote racks without the use of processor units. Therefore, you will need to have one 45C988 remote master module when you are using a remote I/O network. Follow the link above for more information about the 45C989 module, which is required for use with the 45C988 remote master module.

At the top of the 45C988 remote master module’s faceplate, you will see a status LED that is labeled with “RUN.” When the “RUN” LED is illuminated, then it is indicating that the 45C988 remote master module is properly configured and is operating as intended. Below the status LED, there is a series of terminals that were designed to have remote I/O communication wires connected with them. All of these terminals are individually labeled to indicate their intended uses.

For this module, the remote I/O refresh rate will be 5 milliseconds and the maximum number of I/O for every remote network is 128. The cable for the remote I/O can reach up to 300 meters or 1000 feet.

Frequently Asked Questions about 45C988

What is a Reliance 45C988?
The 45C988 is a remote master module. A 45C988 along with a remote target module allows input and output to be in remote racks with processors.
How do you know if a 45C988 is running properly?
You know that a 45C988 module has been configured correctly and the 45C988 is operating properly when the RUN LED is lit on the 45C988. 
Where do I find more about the 45C988?
You can refer to the Remote Master Module and Remote Target Module Instruction Manual - Manual J-3805- for more information about the 45C988. You can also find more about the 45C988 in the Reliance Shark XL Series II Manual - Manual J-3809. This manual has a description of the 45C988 and a diagram of the 45C988 in section 2.1.11 of the manual.

Reviews For 45C988

Internal Review

The Reliance Electric 45C988 Remote Master module allows the user to read when the PLC is in run mode because of the LED features on the faceplate of the module. This LED along with various terminal strip connection identifiers, make the 45C988 easy to remove and replace if necessary. The ease and simplicity of this module allow us to give it 5 stars. Our technicians prefer this master module to the hitachi cross reference alternatives. - AX Control Technician

Repair Services For 45C988

Type Lead Time Price Action
Repair Service 1-2 weeks $780

Our highly skilled technicians can repair your 45C988. All of our repairs come with a 3 Year AX Control Warranty. Please contact us for additional information about our repair process. To receive the repair pricing and lead time listed above please process your repair order via our website. The following repair options may be available upon request:

  • 48-72hr Rush Repair
  • Detailed Repair Reports
  • AX Control Certificate of Warranty

AX Control Warranty Info

All products we sell are backed by our unparalleled warranty. A warranty certificate will be provided with your order upon request.
All PLCs, HMIs, and Turbine Control Boards: 3 Years
All AC/DC and Servo Drives: 2 Years
All Motors: 1 Year
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45C988 Manuals, White Papers, Data Sheets, and Troubleshooting