1766-MM1 | Allen-Bradley MicroLogix 1400 384 KB Memory Module
1766-MM1 is a memory module for the MicroLogix 1400 controller family. It adds 384 KB of separate user memory. Engineers use it for program backup, data archiving and controller-to-controller program transfer. It installs directly into the dedicated memory module slot.
What Problem It Solves
- Guards against program loss from voltage surges, operator error or controller faults.
- Enables auto-recovery after a fault through a simple power cycle.
- Keeps a fixed backup copy separate from controller working memory.
- Reduces unplanned downtime on critical press and safety-related lines.
Core Technical Data
- Brand: Allen-Bradley / Rockwell Automation
- Model: 1766-MM1
- Series: MicroLogix 1400
- Module type: Memory module
- User memory: 384 KB
- Mounting: Memory module slot
- Operating temperature: 0 to 55 °C
- Automatic loading: Supported
- Status bits: S:1/10, S:1/11, S:1/12
- Bit control: S:1/11 Load Memory Module Always
Functions That Matter on the Floor
- Stores user programs and data as a backup copy.
- Moves programs between MicroLogix 1400 controllers.
- Supports safety and security features for press control.
- Allows program comparison between memory and controller.
- Provides data file and memory module write protection.
- Permits removal and insertion under power; module is recognized after a power cycle.
Compatible Equipment
- 1766-L32AWA
- 1766-L32AWAA
- 1766-L32BWA
- 1766-L32BWAA
- 1766-L32BXB
- 1766-L32BXBA
These controllers ship with a memory module port and cover in place. The 1766-MM1 plugs into that port. Configure loading through the controller screen and system prompts.
Oiltech Controls Review and Insight
- Field experience shows most program losses come from power events, not software bugs.
- The 1766-MM1 gives a low-cost layer of protection for older MicroLogix 1400 lines.
- Write protection blocks accidental edits during shift handovers.
- Program compare helps verify a replacement controller before restart.
- Auto-recovery shortens restart time after a controller fault.
Where It Fits Best
- Press control and safety-critical cells.
- Legacy MicroLogix 1400 machines with no spare program copy.
- Lines that need fast controller replacement.
- Plants that run multiple MicroLogix 1400 units with shared programs.
Dispatch, Shipping and Warranty
- Dispatch: 24 to 28 hours after order confirmation.
- Couriers: FedEx, UPS and DHL.
- Warranty: 12 months from delivery.
- Warranty covers functional defects under normal use.
- Warranty excludes field wiring errors, overvoltage and physical damage.
FAQ
Q: Does 1766-MM1 increase controller working memory?
A: No. It adds a separate 384 KB storage area. The controller’s integrated memory stays unchanged.
Q: Can I install 1766-MM1 while the controller is running?
A: Yes. Insertion and removal under power are allowed. The module is recognized after a controller power cycle.
Q: How do I know a memory module suits my controller?
A: Check the controller catalog number first. The 1766-MM1 fits 1766-L32AWA, 1766-L32AWAA, 1766-L32BWA, 1766-L32BWAA, 1766-L32BXB and 1766-L32BXBA.
Q: What should I check before buying a used 1766-MM1?
A: Ask for the label photo and the firmware context. Confirm the module seats firmly in the slot. We test and verify units before shipment.
Q: How does auto-recovery work in practice?
A: After a controller fault, cycle power. The controller can load the stored program from the memory module. This shortens restart time on the line.
Why Buy From Oiltech Controls?
- 15+ years in industrial automation spare parts.
- Global shipment support with FedEx, UPS and DHL.
- Tested industrial surplus and refurbished options.
- 12-month warranty.
- Technical verification before shipment.
- Support for obsolete control systems.
Need a quote or stock check? Email info@oiltechcontrols.com or message +86 158 8020 0923 on WhatsApp.
Copyright © 2026 Oiltech Controls Limited. https://www.oiltechcontrols.com/ All rights reserved.
All rights reserved.
Reviews
There are no reviews yet.