Allen-Bradley 1769-SM2 CompactLogix Specialty Module

Allen-Bradley 1769-SM2 Compact I/O DSI / Modbus module: three channels for PowerFlex 4-class drives (single or multi-drive) or Modbus RTU devices. NJT Automation sources the 1769-SM2 on request; send the part number for a replacement or repair quote.

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

Allen-Bradley 1769-SM2 Compact I/O DSI / Modbus communication module – front view

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Part Number	1769-SM2
Price	On Request Previously sold for $199.99 USDAvailability and condition determine final quote.
Description	Compact I/O DSI / Modbus communication module.
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 ($30.00) 3 years +25% of product price ($50.00) View full warranty policy
Returns	90-day free returns. View return policy
Exchange	Send us your defective 1769-SM2 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.

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Repairs

1769-SM2 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

Part Number Decoder

Compact I/O DSI / Modbus communication module

1769SM2

Compact I/O DSI / Modbus module: three channels for PowerFlex 4-class drives (single or multi-drive) or Modbus RTU devices.

1769: BulletinCompactLogix / Compact I/O: Rockwell Automation's rack-less, DIN-rail Logix platform. 1769 controllers, I/O modules, power supplies and adapters snap together on a shared backplane bus.
SM2: Catalog codeCompact I/O DSI / Modbus module: three channels for PowerFlex 4-class drives (single or multi-drive) or Modbus RTU devices.

Decoded from the Rockwell Automation catalog-number structure. Series and firmware revision are printed on the product label, not encoded here.

Physical Data

Weight and DimensionsWeight0.62 lb (0.28 kg)H × W × D4.6 × 2 × 3.4 in. (118 × 50 × 87 mm)

Weight	0.28 kg (0.62 lb) Typical unit weight
Dimensions (H × W × D)	118 × 50 × 87 mm (4.6 × 2 × 3.4 in.) Communication / specialty module
Shipping Weight	0.73 kg (1.61 lb) Estimated: unit weight plus box and packing material; bills as 2 lb
Shipping Box (L × W × H)	12 × 10 × 8 in. (305 × 254 × 203 mm) Smallest standard box fitting the product with 3 in. cushioning per side

Product weight and dimensions are typical manufacturer-published values and may differ by series or option. Shipping box and weight are estimates for freight planning; the packed unit may ship in a different box.

Datasheet

Datasheet available for download

Generated from product specifications; not an official Allen-Bradley datasheet. For an official datasheet, contact Allen-Bradley or an authorized distributor.

Similar Part Numbers

1769-ARM Catalog code: Address reserve module
1769-HSC Catalog code: High-speed counter
1769-SDN Catalog code: DeviceNet scanner

Allen Bradley Information

Lifecycle: Active. Verify current status with the manufacturer.

Alternate Part Numbers

1769SM2

Previously sold 1769-SM2

1 sold

NJT Automation has supplied and shipped one 1769-SM2 Compact I/O DSI / Modbus communication module in 2025; request a quote and we will source another from our supplier network.

Sold: 1 in 2025
Price: $200
Series: A × 1

The one 1769-SM2 Compact I/O DSI / Modbus communication module sold in 2025 was used and went for $200.

Sold

Allen Bradley 1769-SM2 SER A Compact I/O DSI/Modbus RTU Communication Module

$199.99 USD

Used

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Can the 1769-SM2 be repaired?

Yes. NJT Automation offers mail-in repair for the 1769-SM2, 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 PLC repair specialiston RepairMode.com ↗

Common 1769-SM2 failures

Failure patterns we regularly see on Compact I/O DSI / Modbus communication module hardware like the 1769-SM2:

Network port or transceiver failure: module drops off the network with good cabling
Bus faults from a damaged expansion cable or missing end cap
Scanner shows node faults that follow the module, not the network
Configuration lost after a power event

Repair or replace?

ReplaceA Compact I/O DSI / Modbus communication module holds little more than a network address, so a replacement 1769-SM2 drops in with almost no setup. Replace it when the network is down or the module is physically damaged. A replacement 1769-SM2 is sourced on request, so compare its lead time with a repair before deciding.

RepairRepair makes sense on the 1769-SM2 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. The two 1769-SM2 symptoms we see most often are “Network port or transceiver failure” and “Bus faults from a damaged expansion cable or missing end cap”. If a replacement is already installed, repairing the failed 1769-SM2 gives you a tested spare on the shelf for the next failure. Each 1769-SM2 we repair goes back function-tested with 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:PLC Repair 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 is the 1769-SM2?

The Allen-Bradley 1769-SM2 is a Compact I/O DSI / Modbus module: three channels for PowerFlex 4-class drives (single or multi-drive) or Modbus RTU devices.

What condition is the 1769-SM2 in?

The 1769-SM2 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 1769-SM2 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 1769-SM2 Compact I/O DSI / Modbus communication module. 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 1769-SM2 has been sourced and is ready, free local pickup is available at NJT Automation, 2122 N Prospect Ave, Milwaukee, WI, during business hours.