Skip to content
Free Ground Shipping | Overnight Shipping Available | Texas-based company, and all shipments come from the USA
(833) 800-7748

1756-MVI Allen-Bradley

Original price $1,317.25 - Original price $1,374.78
Original price
$1,374.78
$1,317.25 - $1,374.78
Current price $1,374.78
Surplus - Tested (With Warranty)
Need a Specific Revision?
$1,374.78
3 in stock
New / Open-Box Surplus
Need a Specific Revision?
$1,317.25
5 in stock
Ships today if ordered by 1 PM CST
Overnight shipping available
Qty Available: (3) ✓ Verified Stock every 24hrs
Questions? (833) 800-7748

All products listed are sold by PLC Department, an independent supplier — not an authorized Allen Bradley distributor. Covered by our 1-year warranty. By purchasing you acknowledge our full disclaimer. Read & agree ↓

Ships from Texas, USA
Same-day by 1 PM CST
Tested & inspected
Every unit, before it ships
1-year warranty
Backed direct by us
30-day returns
Hassle-free RMA
Stock verified / 24 hrs
Real-time availability
Photos on request
Your exact unit, ~5 min
Trusted By

Product Details

Description · Specifications · Product Overview

Specifications provided for reference. Verify critical details against official manufacturer documentation before installation.

Product Overview

The 1756-MVI is a ControlLogix Multi-Vendor Interface (MVI) module for Allen-Bradley 1756 chassis. It provides configurable serial communication via RS-232, RS-422, and RS-485 protocols, supporting SERCOS interfaces. The module enables integration of multi-vendor devices into ControlLogix systems, commonly used in industrial motion control or legacy network connectivity applications. The 1756-MVI occupies one backplane slot and facilitates communication between SERCOS-based devices and the Logix environment.

Best Suited For

  • SERCOS-based drive or motion device integration
  • Legacy serial device interface
  • ControlLogix chassis with mixed-vendor I/O
  • Industrial motion control applications using SERCOS
Communication protocols
RS-232, RS-422, RS-485
SERCOS data rate
4 or 8 Mbit/s
Backplane current draw @ 5 V
800 mA
Power dissipation
6.2 W (with 1.2 A @ 5.1 V)
Isolation voltage
50 V continuous

Technical Specifications

I/O & Electrical

Communication interfaces
RS-232, RS-422, RS-485
SERCOS data rate
4 or 8 Mbit/s

Communication & Power

Backplane current draw @ 5 V
800 mA
Backplane current draw @ 24 V
3 mA
Current draw @ 5.1 V
1.2 A
Power dissipation
6.2 W
Thermal dissipation
21.2 BTU/h

Physical & Environmental

Isolation voltage
50 V continuous
Enclosure
None (open-style)

1-Year Warranty

Every tested unit is backed by our free 1-year PLC Department warranty, direct from us.

Fast Shipping

Free ground shipping. Orders by 1 PM CST ship same-day, with overnight available.

USA Stock

Sourced and shipped from Texas, USA. Never anonymous overseas marketplace stock.

30-Day Returns

Hassle-free RMA. If the part is not right for your application, send it back within 30 days.

Reseller Options

Resellers welcome. Reach out for volume pricing and we will get you set up.

Talk to a Real Person

Fast answers on stock, revisions, and shipping. (833) 800-7748 or live chat.

PLC Department customer reviews from maintenance and engineering teams

Trusted by 1000s of teams who keep plants running

From maintenance managers and controls engineers to Fortune 500 manufacturers, teams across America count on PLC Department. Years of customer care, every unit bench-tested before it ships, and real people on the phone when a line is down. Our job is simple: get you back up and running, fast.

Read customer reviews

We're here to support your business
Call, email, or chat anytime

Rockwell Automation documentation

Access official manuals, datasheets, and lifecycle information for this part directly from Rockwell Automation.

Visit RockwellAutomation.com

Must Read: Disclaimer

PLC Department sells surplus and refurbished industrial automation products, including but not limited to programmable logic controllers (PLCs), which are sourced exclusively through independent third-party channels. PLC Department is not an authorized distributor, reseller, or representative of any manufacturer listed on this website, including Rockwell Automation or its Allen-Bradley brand. All product warranties, where offered, are provided solely by PLC Department and not by the original manufacturer.

Any reference to manufacturer names, logos, trademarks, or product identifiers is for identification and compatibility purposes only. All such trademarks and brand names are the property of their respective owners, and this website is not affiliated with, endorsed by, or approved by any manufacturer referenced herein.

The products offered for sale may be used or surplus and may contain older date codes, be of earlier series or versions, or differ in appearance or features compared to products available through factory-authorized distribution channels. The presence, version, or functionality of firmware, if any, on programmable devices such as Allen-Bradley PLCs is not guaranteed. PLC Department makes no representation or warranty regarding:

PLC Department does not obtain or supply firmware on behalf of customers. It is solely the customer's responsibility to ensure legal and compliant use of any firmware or software associated with products purchased through this site, including compliance with any applicable license agreements or manufacturer policies.

Products listed on this site may vary in country of origin, packaging, language, accessories, and included materials. Any quality control, testing, certification, or warranty previously associated with the manufacturer does not apply unless explicitly stated by PLC Department.

By purchasing through this website, you acknowledge and agree to these terms.