Allen-Bradley MicroLogix 1400: Replacement & Cross-Reference

The Allen-Bradley MicroLogix 1400 (1766-L32 series) is a legacy micro-PLC that Rockwell Automation has discontinued and moved to end-of-life. The recommended modern replacement is the Micro850 (2080-LC50) for a like-for-like upgrade, or a CompactLogix 5370 / 5380 controller if you are expanding I/O or standardizing on EtherNet/IP. If you need to keep an existing machine running without re-engineering, Edmundson Industrial sources new-surplus, used-tested, and reconditioned MicroLogix 1400 units, and can supply the migration hardware when you're ready to upgrade.

Status

Brand	Allen-Bradley / Rockwell Automation
Family	MicroLogix 1400
Common catalog numbers	1766-L32BWA, 1766-L32AWA, 1766-L32BXB, 1766-L32BWAA, 1766-L32AWAA, 1766-L32BXBA
Lifecycle	Discontinued / end-of-life: verify current Rockwell status at quote
Programming	RSLogix 500 / RSLogix Micro (legacy)

Cross-Reference

If you have (obsolete)	Recommended path	Notes
MicroLogix 1400 (1766-L32BWA)	Micro850 (2080-LC50-48QWB)	Closest like-for-like; reprogram in Connected Components Workbench.
MicroLogix 1400 (expanding I/O)	CompactLogix 5370 (1769-L24ER) / 5380	For scalability / EtherNet-IP; program in Studio 5000.
MicroLogix 1400 (keep program)	New-surplus / used-tested MicroLogix 1400 (we source)	Keeps the installed program with no re-engineering. Verify the catalog suffix matches.

Cross-references are starting points: confirm I/O count, voltage, and program compatibility before substituting. We'll verify on request.

Key Specs

32 I/O points base (20 digital in / 12 digital out), expandable with 1762 expansion I/O
Embedded EtherNet/IP plus RS-232 / RS-485 combo port
Analog depends on model; built-in LCD display; supports online editing
Supply 120/240VAC or 24VDC depending on suffix (BWA = AC in / relay out, BXB = DC)

Is the MicroLogix 1400 still made?

No. Rockwell has discontinued the MicroLogix family, the 1400 included. Its very large installed base on OEM equipment means replacement demand keeps climbing as units age out: MicroLogix 1400 is one of the most-searched legacy AB PLCs and trades actively on the surplus market. The practical play: keep a surplus 1400 on the shelf for any critical machine, and schedule a Micro850 or CompactLogix migration at a planned stop.

FAQ

Is the MicroLogix 1400 still being made?

No: Rockwell has discontinued the MicroLogix family. Units are available through surplus and used/reconditioned channels like Edmundson Industrial.

What is the modern replacement for a MicroLogix 1400?

The Micro850 (2080-LC50) is the closest like-for-like; for larger or EtherNet/IP-standardized systems, CompactLogix 5370/5380. Both require converting the program from RSLogix 500.

Can I still buy a new MicroLogix 1400?

Yes: new-surplus units still exist. We supply new-surplus, used-tested, and reconditioned MicroLogix 1400 controllers without requiring an immediate migration.

Do I have to rewrite my program to upgrade?

Yes. Moving to Micro800 or CompactLogix requires converting from RSLogix 500 to Connected Components Workbench or Studio 5000. Many plants keep a surplus MicroLogix on the shelf to avoid downtime until a planned upgrade.

What do you need to quote a MicroLogix 1400?

The full catalog number (1766-L32…) or a nameplate photo, acceptable condition, new-surplus, used-tested, or reconditioned, and your need-by date.

Availability & Quote

Condition disclosed before sale, new-surplus, used-tested, or reconditioned, with photos on request.

Request a Quote

or send your catalog number to sales@edmundsonindustrial.com · (832) 975-8827 · Houston, TX. Response timing is confirmed with the request.

Related Allen-Bradley legacy pages

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