Allen-Bradley 20-COMM-C 20COMMC Cable Control Net Adapter

Allen-Bradley 20-COMM-C 20COMMC Cable Control Net Adapter. NJT Automation sources the 20-COMM-C on request; send the part number for a replacement or repair quote.

Quote required. Request a quote below for pricing and delivery.

Allen-Bradley 20-COMM-C industrial automation module – front view

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Part Number	20-COMM-C
Price	On Request Previously sold for $219.99 USDAvailability and condition determine final quote.
Description	Allen-Bradley 20-COMM-C 20COMMC Cable Control Net Adapter. Communications adapter, ControlNet to DPI Communication.
Shipping	UPS Ground included \| Next-Day Air and Worldwide Shipping available at checkout
Warranty	1-year full-function warranty provided by NJT Automation. Warranty details Included 1 year, full-function 2 years +15% of product price ($33.00) 3 years +25% of product price ($55.00) View full warranty policy
Returns	90-day free returns. View return policy
Exchange	Send us your defective 20-COMM-C after your purchase for a 10% core credit. We also purchase old or damaged parts outright.

Availability

Available Level 1

This part is available through our Level 1 supplier network. Request a quote to confirm quantity, price, and next-day shipping options.

Inventory Level 1 RFQ

Level 1 parts come from vetted US suppliers we have worked with for years. Each unit is checked before it ships, so counterfeits, repackaged items sold as new, and worn-out equipment do not reach you. Every part carries the same NJT warranty and return policy as our own stock.

Request Quote Learn more about Inventory Levels

Repairs

20-COMM-C Mail-In Repair Service

How the Process Works:

Submit Your RFQ: Complete the request-for-quote (RFQ) form with your exact requirements.
Receive a Quote: We respond ASAP - within 1 hour during business hours.
Approve and Pay: Agree to the quoted price, and we will issue an invoice payable via credit card or your preferred method.
Direct Shipping: Our normal shipping time is 3-5 business days, during which we thoroughly inspect and certify items to meet our high standards. If you request next-day air delivery, the item will be sent directly to you and arrive the following business day. Please note: These items are NOT available for local pickup at NJT Automation's location.

What We Offer

We source genuine parts from trusted U.S. channels and stand behind what we sell.

Our network has millions of parts ready to be delivered now.
Complete Transparency: Clear information on item availability.
Well-vetted components from trusted suppliers sourced from the USA.
Technical Support: Assistance, troubleshooting and hardware repairs.
Minimal Markup: The best sourcing service at a minimal cost.
Quick Delivery: Fast access to the parts you need to get your machines back up and running.
Dropship available • No branding on packaging

Physical Data

Weight and DimensionsBox10 × 8 × 6 in.

Shipping Box (L × W × H)	10 × 8 × 6 in. (254 × 203 × 152 mm) Most common box recorded for this catalog number

Shipping box and weight are recorded from previous shipments of this catalog number and are provided for freight planning.

Allen Bradley Information

Technical Description

Communications adapter, ControlNet to DPI Communication

Alternate Part Numbers

20COMMC, 20 C0MM C, 2OCOMMC

Previously sold 20-COMM-C

1 sold

NJT Automation has supplied and shipped one 20-COMM-C 20COMMC Cable Control Net Adapter in 2024; request a quote and we will source another from our supplier network.

Sold: 1 in 2024
Price: $220
Series: B × 1

The one 20-COMM-C 20COMMC Cable Control Net Adapter sold in 2024 was unused surplus and went for $220.

Sold

Allen Bradley 20-COMM-C / 20COMMC Ser B Cable Control Net Adapter

$219.99 USD

Unused surplus (new old stock)

Request Quote

Can the 20-COMM-C be repaired?

Yes. NJT Automation offers mail-in repair for the 20-COMM-C, including diagnostic evaluation, component-level repair, and functional testing.

NJT Managed Repair

One vendor. One warranty. NJT manages the entire process.

1-year full-function NJT warranty, with 2- and 3-year options available
Rush service available for production-critical repairs
No evaluation or diagnostic charges
No repair, no charge
"Unrepairable" is not an option
Pre-paid UPS shipping label provided for sending your unit in
$650 minimum repair charge, shipping included both ways

Get an NJT Repair Quote

Looking for another option? For lower-cost repairs or if you prefer to work directly with an independent repair specialist, compare bids through RepairMode. RepairMode providers operate independently and set their own pricing and warranty terms.

Find a repair specialiston RepairMode.com ↗

Common 20-COMM-C failures

Failure patterns we regularly see on PowerFlex communication / HIM option hardware like the 20-COMM-C:

Drive reports Port loss / comm loss (F081 / DPI port fault) with the card installed
Network port dead or flapping with a good cable
HIM display blank, dim or keypad membrane unresponsive
Card not recognized by the drive: DPI connector or ribbon damage

Repair or replace?

ReplaceA 20COMMC Cable Control Net Adapter holds little more than a network address, so a replacement 20-COMM-C drops in with almost no setup. Replace it when the network is down or the module is physically damaged. The 20-COMM-C is not shelf stock, so sourcing time is part of the repair-or-replace decision.

RepairRepair makes sense on the 20-COMM-C when the failure is a connector, port or power-section fault on an otherwise sound board, or when you have several failing modules and want them returned as tested spares. Most 20-COMM-C units reach our bench with one of two symptoms: “Drive reports Port loss / comm loss (F081 / DPI port fault)” or “Network port dead or flapping with a good cable”. Already swapped it out? Repairing the failed 20-COMM-C turns it into a tested spare on the shelf for the next failure. Repaired 20-COMM-C units are function-tested before return and carry a 1-year warranty.

Request a Repair Quote

Text photos of the faulty unit and the symptoms to (414) 331-5954.

Start Your Repair Today

Related services:All Repair Services

All product photos were taken by NJT Automation. Test videos originated from either NJT Automation internally or from repair technicians within our network.

Still have questions?

Find answers to shipping, warranties, repairs, and more.

Frequently Asked Questions

What condition is the 20-COMM-C in?

The 20-COMM-C is available in Unused surplus / Refurbished / Used condition. We can quote this part in unused surplus, refurbished, or used condition depending on availability and your preference. Specify your requirement in the RFQ.

When does this part ship?

This 20-COMM-C is sourced on request, so sourcing and quote timelines apply. Request a quote and we'll confirm availability and lead time. Many parts can be sourced within a few business days through our Level 1 supplier network.

Can you ship this next-day air?

Yes. UPS Next Day Air is available at checkout for the 20-COMM-C. Place your order before 5:00 PM Central on a business day and your in-stock item ships the same day for next-business-day delivery.

Can I pick this item up locally?

Yes. Once your 20-COMM-C has been sourced and is ready, free local pickup is available at NJT Automation, 2122 N Prospect Ave, Milwaukee, WI, during business hours.