Allen-Bradley 1747-M13 SLC 500 64KB Memory Module

Key Technical Specifications

Rockwell Automation identifies the 1747-M13 as a 64 KB memory module for SLC 5/03, SLC 5/04, and SLC 5/05 processors. The compatibility table specifically requires Series C or later operating-system versions for these processor families.

Product Introduction

The Allen-Bradley 1747-M13 is a 64 KB Flash EPROM memory module for SLC 500 processors. It provides non-volatile storage for a controller program and associated data, allowing the application to be retained independently of the processor’s normal RAM/battery-backed memory. It is compatible with SLC 5/03, 5/04, and 5/05 Series C or later processors.

This module is primarily a program-storage and recovery device, not a runtime RAM expansion. For legacy SLC installations, it can provide an important recovery path when processor battery condition or RAM corruption is a concern. Rockwell discontinued the 1747-M13 on March 31, 2024, with no planned Rockwell replacement.

1747-M13

1747-M13

Installation & Configuration Guide

Stage 1 — Pre-Installation and Safety

1. Verify that the module is 1747-M13 and inspect the memory-module connector for bent, contaminated, or damaged contacts.
2. Identify the installed processor model and firmware revision.
3. Confirm that the controller is an SLC 5/03, 5/04, or 5/05 with the required Series C or later OS.
4. Back up the current SLC processor program before writing anything to the memory module.
5. If the objective is recovery rather than backup, verify that the program stored on the 1747-M13 is actually the required application revision.
6. Prepare an approved ESD-controlled work area.
7. Estimated time: 15–30 minutes.

WARNING: The 1747-M13 is not a substitute for additional CPU runtime memory. It provides non-volatile backup storage; the processor’s installed CPU determines its available operating memory.

Stage 2 — Removing or Accessing the Module

1. Place the controlled machine or process into a safe state.
2. Follow the site’s LOTO procedure.
3. Remove controller power before removing the processor or inserting the memory module.
4. Remove the SLC processor from the chassis according to the applicable SLC 500 procedure.
5. Locate the memory-module socket on the processor.
6. If an existing module is installed, remove it carefully without damaging the socket or contacts.
7. Record the existing module’s catalog number, revision, and any identification label before replacement.
8. Estimated time: 15–30 minutes.

Rockwell’s installation instructions explicitly require controller power to be turned off before removing the processor and inserting the memory module.

Stage 3 — Installation and Programming

1. Align the 1747-M13 with the processor memory-module connector.
2. Press the module firmly into position without forcing it at an angle.
3. Reinstall the processor into the chassis.
4. Restore controller power only after the processor and memory module are correctly seated.
5. To program the module, configure the applicable SLC memory-module configuration bits in the offline program.
6. Download the required program to the processor.
7. Use the processor/software procedure to burn the program into the 1747-M13.
8. If using an 1747-M15 programming adapter, use Series B. Rockwell warns that using a Series A 1747-M15 with an M13 can damage the memory module or programming equipment.
9. Estimated time: 30–60 minutes, depending on programming and verification requirements.

Stage 4 — Power-Up and Verification

1. Confirm that the processor starts without memory-module faults.
2. Verify that the stored program corresponds to the intended application revision.
3. Confirm the controller’s operating mode and processor status.
4. If the module is being used for backup, document its contents, date, machine identifier, and program revision.
5. If restoring a program from the M13, compare the restored application against the plant’s approved master copy before returning the machine to production.
6. Test critical sequences, interlocks, I/O operation, and communications after restoration.
7. Estimated time: 30–90 minutes for functional verification.

Procurement warning: A physically new-looking 1747-M13 does not prove that it contains the correct application. For a programmed spare, verify both hardware condition and program contents.

Frequently Asked Questions (FAQ)

1. What is the Allen-Bradley 1747-M13 used for?

The 1747-M13 is a 64 KB non-volatile memory module used with compatible SLC 500 processors for program and data-table backup. It is installed directly in the processor’s memory-module socket.

2. Which SLC processors support the 1747-M13?

It is supported by SLC 5/03, SLC 5/04, and SLC 5/05 Series C or later operating systems. Rockwell specifies OS302 or later for SLC 5/03, OS401 or later for SLC 5/04, and OS501 or later for SLC 5/05.

3. Does the 1747-M13 increase the processor’s runtime memory?

No. The 1747-M13 is a non-volatile storage/backup device, not a runtime memory expansion. The CPU’s catalog number determines its available operating memory.

4. What programming adapter is required for the 1747-M13?

The applicable programming adapter is 1747-M15 Series B. Rockwell specifically warns against using a Series A 1747-M15 adapter with the M13 because damage to the memory module or programming equipment may occur.

5. Is the 1747-M13 still manufactured?

No. Rockwell Automation lists the 1747-M13 as discontinued effective March 31, 2024, with no planned Rockwell replacement. Existing SLC 500 installations therefore depend on remaining OEM stock, new-surplus inventory, or tested aftermarket units.

6. Can a used 1747-M13 be used as a spare?

Yes, provided the module passes appropriate inspection and functional testing. For a programmed spare, procurement should also verify whether the module contains the correct application. A replacement memory module with the wrong program is not equivalent to a tested, application-ready spare.

7. What should I verify before purchasing a 1747-M13?

Confirm the 1747-M13 catalog number, physical condition, processor compatibility, revision, memory capacity, connector condition, and whether the unit is blank or programmed. For critical SLC assets, request a documented functional test and, where applicable, verification of the stored program rather than purchasing solely on the basis of a visual inspection.