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1756-CMS1B1

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Allen-Bradley 1756-CMS1B1 is a one-slot ControlLogix compute module with a dual-core Intel Atom processor, 4 GB memory, 32 GB storage, and Windows 10 IoT Enterprise.
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Technical specifications for 1756-CMS1B1

  • Manufacturer:
    Allen-Bradley
  • Part Number:
    1756-CMS1B1
  • Product Family:
    ControlLogix
  • Product Type:
    ControlLogix Compute Module
  • Stock:
    1
  • Processor:
    Intel Atom, dual core
  • Onboard memory:
    4 GB
  • Storage:
    32 GB solid-state
  • Operating system:
    Windows 10 IoT Enterprise
  • Power requirement:
    5.1 V DC at 1.4 A
  • Supported chassis:
    1756-A4/A7/A10/A13/A17, Series B or C
  • Weight:
    0.394 kg
  • Estimated shipping dimensions:
    3.5x14x14.5cm
  • Tariff Code:
    8537101190
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Chassis Fit Power and Ports Application Control Product Applications

Features:

  • One-slot ControlLogix compute module for supported Series B or C chassis
  • Dual-core Intel Atom platform with 4 GB memory and 32 GB storage
  • Windows 10 IoT Enterprise environment for documented applications
The module adds a local industrial-computing environment to a ControlLogix chassis without acting as the Logix controller itself.

Hardware identity and software state are equally important because the operating-system image, application, licenses, network settings, and security configuration determine the delivered function.

Acceptance testing should cover chassis power, startup, ports, application data flow, recovery, and authorized cybersecurity controls.

The 1756-CMS1B1 Allen-Bradley is listed as Active / Available from OEM.

Allen-Bradley 1756-CMS1B1 ControlLogix Compute Module Manuals,Datasheets,Link

Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.

  • Use one slot in a supported 1756-A4, A7, A10, A13, or A17 chassis.
  • Confirm Series B or C chassis identity and the available power budget.
  • Include the module thermal load in enclosure review.
  • Allow approximately 1.4 A from the 5.1 V DC backplane rail.
  • Document every connected port, cable, network address, and peripheral.
  • Separate a power-up success from proof of application communication.
  • Back up the operating-system image, application data, and licenses.
  • Restore only approved network and cybersecurity settings.
  • Test recovery and application data flow before production release.
  • Chassis-resident industrial computing
  • Local data handling for documented ControlLogix applications
  • Migration or recovery using a verified software image
Description
Allen-Bradley 1756-CMS1B1 is a Series A ControlLogix compute module that places an industrial Windows computing resource in one supported 1756 chassis slot. Its onboard platform combines a dual-core Intel Atom processor, 4 GB memory, 32 GB solid-state storage, and Windows 10 IoT Enterprise.

1756-CMS1B1 is rated for 5.1 V DC at 1.40 A from the chassis backplane. It is intended for documented applications that need local computing, data handling, or application services while remaining integrated with the supported ControlLogix chassis.

Selection of 1756-CMS1B1 should confirm a supported 1756-A4, A7, A10, A13, or A17 Series B or C chassis, available slot and power capacity, application image, licenses, network addressing, BIOS, account, password and remote-access settings, connected ports, and the Rockwell backup and restore workflow. The catalog match alone does not restore the software environment.
Alternative Names
1756-CMS1B1 1756CMS1B1 1756 CMS1B1 Allen-Bradley 1756-CMS1B1 Allen Bradley 1756-CMS1B1 1756-CMS1B1 ControlLogix Compute Module ControlLogix 1756-CMS1B1 Rockwell Automation 1756-CMS1B1
Technical notes
Before replacing 1756-CMS1B1, capture the application image, licenses, Windows configuration, network settings, connected devices, security controls, and recovery media. Confirm a supported Series B or C 1756 chassis, one free slot, and adequate 5.1 V backplane capacity. Restore software only from a verified, authorized backup.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
Can 1756-CMS1B1 be installed in any ControlLogix chassis?
No. Confirm a supported 1756-A4, A7, A10, A13, or A17 Series B or C chassis, one available slot, and sufficient backplane power before installation.
Can another 1756 communication or controller module replace 1756-CMS1B1?
No. This is a Windows compute module with a specific processor, memory, storage, operating system, and application role. Similar chassis fit does not establish functional equivalence.
What must be backed up before replacing 1756-CMS1B1?
Capture the application image, project data, licenses, Windows and network settings, user-approved security configuration, connected-device details, and tested recovery media.
Why can 1756-CMS1B1 power up but provide no application data after replacement?
The hardware may be healthy while the operating-system image, application, license, network address, firewall policy, time settings, or connected-port configuration is missing or different.
Is 1756-CMS1B1 currently an OEM product?
As checked on 2026-10-09, Rockwell lists 1756-CMS1B1 as Active and Preferred. This is a dated lifecycle finding, not a promise of future OEM availability or stock; still verify series, software image, licenses, chassis support, and the complete configuration before ordering.
What should be validated before 1756-CMS1B1 returns to service?
Validate the restored operating-system image, application and licenses, chassis support and power budget, BIOS, account, password, network, time and remote-access settings, connected ports, data flow, and tested backup and recovery procedure.