The Allen-Bradley 1762-MM1, also cataloged as the 1762-MM1 Memory Module, operates as a dedicated hardware component for non-volatile user program storage and data file retention within MicroLogix 1200 controller platforms.

Module Configuration & Functional Features

The Allen-Bradley 1762-MM1 provides an 8K-word non-volatile memory footprint designed specifically for MicroLogix 1200 controllers. Cataloged alternatively under 1762MM1, the physical assembly integrates directly into the controller memory slot to support program compare operations, data file download protection, and hardware-level write protection switches.

Physical & Operational Parameters

Deterministic System Integration & Memory Interface

The memory module connects directly to the internal controller bus structure, bypassing external communication cables. High-speed internal bus transfers ensure rapid compare cycles between running RAM and stored EEPROM contents. The module supports firmware flash compatibility protocols across EtherNet/IP deterministic networks when accessed through connected controller comm ports. System scaling is maintained without increasing base unit backplane current load.

Shipment Kit Contents

• 1 x 1762-MM1 Memory Module Assembly
• 1 x Anti-Static Protective Housing Sleeve
• 1 x Hardware Installation Guide

Field Handling & Slot Insertion Procedures

• Static electricity can damage semiconductor components; ground yourself using an ESD wrist strap prior to opening the module cover.
• Remove the memory module port cover located on the front face of the MicroLogix 1200 controller base.
• Align the guide pins of the 1762-MM1 card with the internal connector socket on the controller board.
• Press the memory module firmly into place until the retention tabs snap securely flush with the controller casing.
• Verify write-protection switch settings on the card edge prior to applying power to prevent accidental program overwrites.

Technical Support FAQ

• Can the 1762-MM1 be inserted or removed while controller power is applied?

  Yes, the 1762-MM1 memory module supports insertion and removal under power (hot-swapping) without causing CPU fault conditions.

• What memory size is provided by the 1762-MM1 module?

  The module contains 8K words of non-volatile memory dedicated to backing up user ladder logic, configuration settings, and data files.

• Does the 1762-MM1 draw additional current from the controller power supply?

  The module operates as a low-power memory device drawing negligible current directly from the internal MicroLogix 1200 logic bus.

• How does write protection function on this memory module?

  A physical switch or software setting prevents external programming devices from overwriting stored program and data files.

• What happens during a power loss when the 1762-MM1 is installed?

  Upon power restoration, the controller can automatically load the backed-up 8K-word program from the EEPROM into active RAM.

• Is the 1762-MM1 compatible with MicroLogix 1100 or 1500 controllers?

  No, the 1762-MM1 form factor and connector pinout are engineered specifically for the MicroLogix 1200 controller family.

• What relative humidity range applies to module operation?

  The module is designed to operate reliably within non-condensing relative humidity levels ranging from 5% up to 95%.

• Does the 1762-MM1 require a battery to retain its memory contents?

  No, the 1762-MM1 utilizes solid-state EEPROM technology which retains program data indefinitely without battery power.