Allen Bradley 1756-M1 Logix5555 Processor 7.5 MB Memory Module

Product Summary

The 1756-M1 is a ControlLogix memory expansion module. It provides additional user memory for ControlLogix L6x series controllers, allowing larger application programs, more tags, and increased data storage capacity.

Core Specifications

• Catalog Number: 1756-M1
• Module Type: Memory Expansion Module
• Compatible Controllers: 1756-L6x series ControlLogix controllers
• Memory Size: 1 MB user memory expansion
• Installation: Plugs directly into the controller’s memory slot

Electrical & Performance Characteristics

• Function: Expands controller memory for larger applications and increased tag counts
• Compatibility: Supported by specific L6x firmware revisions (check controller manual)
• Backplane Current: Negligible (passive memory module)

Installation Guide

1. Power down the ControlLogix chassis.
2. Remove the controller from the chassis if necessary.
3. Insert the 1756-M1 memory module into the designated memory expansion slot on the controller.
4. Reinstall the controller and power on the system.
5. Verify expanded memory availability in Studio 5000 Logix Designer or controller properties.

Selection Guidelines

• Use 1756-M1 to expand memory on compatible 1756-L6x controllers requiring additional capacity.
• Confirm firmware version compatibility with the target controller before installation.
• For larger memory requirements, consider higher-capacity modules such as 1756-M2, 1756-M3, etc.

Frequently Asked Questions