1. Product Overview

The Schneider Electric TSXMRPF004M SRAM File Memory Expansion is a dedicated memory accessory designed for compatible Modicon Premium programmable logic controllers (PLCs). With a nominal memory capacity of 4096 KB (4 MB), it provides additional SRAM storage for supported PLC data-file applications, including the storage of production data and manufacturing recipes.

In industrial automation systems, PLC memory is used for more than control-program instructions. Depending on the controller architecture and application design, memory can also accommodate production recipes, operating parameters, data records, and other information required by the control process. When the available data-file storage becomes insufficient, an appropriate memory expansion can help maintain the existing control architecture.

Unlike configurable application/data memory cards, the TSXMRPF004M belongs to the SRAM file-memory expansion category. Its primary purpose is to provide dedicated data-file storage rather than offer a configurable division between application memory and data-file memory.

The module is intended for compatible Schneider Electric Modicon Premium processors, including supported models in the TSX572 to TSX576 range and TSXPCI572/3 family. It is installed in a supported memory-card slot, with the exact processor reference and system configuration determining compatibility.

For industrial facilities maintaining legacy automation equipment, the TSXMRPF004M may be relevant to PLC maintenance, memory-card replacement, and the preservation of established production systems. Since the product has been discontinued, purchasers should verify the exact reference, product condition, and compatibility before ordering.

2. Technical Specifications

The dimensions and weight above are based on the supplied product information. Memory capacity and processor compatibility should be confirmed against the documentation for the exact installed controller.

3. Function and Working Principle

3.1 SRAM-Based Data Storage

SRAM, or static random-access memory, is semiconductor memory that allows electronic access to stored data. In an industrial PLC, the memory architecture determines how application instructions and operating data are stored and accessed by the controller.

The TSXMRPF004M provides additional SRAM file-memory capacity for supported Modicon Premium processors. It is designed to support data-storage requirements within the controller’s supported memory architecture.

The card is not a standalone PLC and does not execute machine-control logic independently. Instead, it works as a memory accessory within a compatible processor configuration. The processor and its application software determine how supported data files are created, accessed, and used.

3.2 Dedicated File-Memory Capacity

The TSXMRPF004M provides a nominal 4096 KB of file-memory capacity. This dedicated storage can be relevant when a control application needs additional space for data files beyond the resources available in the existing configuration.

Potential uses include:

• Storing supported manufacturing recipes.
• Retaining production-related data files.
• Supporting applications that require additional PLC data-storage capacity.
• Maintaining an existing controller configuration where the original memory card needs replacement.

The precise data structures and file operations available depend on the processor, programming software, and application design. The card should not be assumed to support every storage function available on modern PLC platforms.

3.3 Data Files and Application Programs

A PLC application program contains the instructions that determine how a machine or industrial process operates. Data files serve a different purpose: they can hold information used by the application during operation.

For example, a packaging system may use a control program to sequence motors, sensors, and actuators while maintaining recipe values for different products. The program defines the operating logic, while the recipe data provides values used by that logic.

By providing dedicated file-memory capacity, the TSXMRPF004M can help support this separation between program logic and stored application data, provided the controller and software are configured accordingly.

The card does not automatically create or manage recipes. Engineers must configure the relevant data structures and application routines within the supported PLC environment.

3.4 SRAM Retention Considerations

SRAM is volatile memory technology. Data retention therefore depends on the memory-card design and its supported power-retention or backup arrangements.

For a legacy PLC installation, maintenance personnel should check the manufacturer’s documentation for applicable battery requirements, data-retention behavior, and procedures for removing or replacing the card. They should also maintain verified backups of critical application data.

A memory card that has been removed from a working controller should not automatically be assumed to contain current or recoverable production data.

4. Role in Industrial Control Systems

4.1 Expanding Data Storage in Existing PLCs

Industrial control systems frequently remain in service for many years. A facility may continue using an established PLC because its control program, I/O configuration, communication interfaces, and operating procedures are already integrated into the production process.

When a data-storage requirement exceeds the available capacity, a compatible memory expansion may help address that requirement without replacing the entire controller. The TSXMRPF004M is intended for this type of supported Modicon Premium application.

However, the card does not increase processor performance, add new I/O channels, or upgrade communication capabilities. Its function is limited to providing the supported file-memory resource.

4.2 Supporting Production Recipes

Manufacturing recipes can contain operating values used to configure a production run. Depending on the application, these may include setpoints, timing values, product parameters, or other process-specific information.

When the PLC platform and software support the relevant storage operations, additional file memory can help accommodate these data requirements.

The TSXMRPF004M may therefore be relevant to production equipment where maintaining existing recipe-management functions is important. The actual recipe structure, capacity, and access method must be established by the application design rather than assumed from the memory-card capacity alone.

4.3 Supporting Data-File Management

Some industrial applications use PLC data files to retain information required for normal operation, changeovers, or maintenance activities. Additional file-memory capacity can help provide storage headroom where the processor supports the card.

The memory expansion does not replace an industrial database, historian, or supervisory computer. Large-scale production analytics and long-term record retention may require separate systems, depending on the facility’s requirements.

4.4 Maintaining Legacy Automation Infrastructure

For plants operating compatible Modicon Premium PLCs, replacing an individual memory accessory may be simpler than migrating the entire control system. However, the suitability of this approach depends on the condition of the processor, software availability, spare-parts strategy, and the long-term maintenance requirements of the installation.

The TSXMRPF004M should be evaluated as a legacy spare part, with exact compatibility and data-recovery requirements checked before installation.

5. Industrial Applications

Manufacturing and Assembly Equipment

Manufacturing equipment may rely on PLC-based sequences and stored process parameters. Where the installed Modicon Premium processor supports the TSXMRPF004M, its dedicated file-memory capacity may be useful for maintaining existing data-file functions.

Examples include automated assembly stations, machine tools, production-line equipment, and specialized manufacturing cells.

Packaging and Product Changeovers

Packaging systems can use stored recipes or product-specific parameters when switching between production formats. A supported PLC data-file memory expansion may help accommodate these files within an established control system.

The exact application depends on the PLC program and the file-handling functions supported by the installed software.

Process Machinery

Industrial machinery may use PLC data files for operating parameters, process configurations, or other information associated with different operating conditions.

The TSXMRPF004M can be considered where additional file storage is required and the installed processor is compatible. It does not itself measure process variables, control actuators, or perform closed-loop regulation.

Material Handling Systems

Conveyors, transfer systems, and automated handling equipment may use stored operating parameters and application data. In legacy installations, additional data-file memory can help maintain the original configuration when the supported storage capacity is otherwise insufficient.

Maintenance of Legacy PLC Systems

The product is particularly relevant to maintenance teams responsible for older Modicon Premium controllers. A failed, missing, or damaged memory card may require replacement with the same reference or another specifically approved solution.

For such projects, the exact part number is critical. A card with a similar appearance or a larger capacity is not automatically compatible.

6. Installation and System Integration

Correct installation requires checking the processor, memory-card slot, application configuration, and data-retention procedures.

6.1 Confirm the Processor Reference

Before ordering or installing the TSXMRPF004M, identify the complete reference of the installed processor. The documented compatibility family includes TSX572 to TSX576 and TSXPCI572/3, but the precise processor version and hardware configuration must be checked.

Do not rely solely on the Modicon Premium family name to determine compatibility.

6.2 Verify the Memory-Card Slot

The TSXMRPF004M is documented for Slot 0 or Slot 1 on supported processors. Confirm the correct slot arrangement and any processor-specific restrictions before installation.

Follow the applicable Schneider Electric hardware instructions and site procedures. Do not insert or remove the card while the equipment is energized unless the manufacturer explicitly permits the operation for the exact configuration.

6.3 Back Up Application Data

Before replacing a memory card, create and verify backups of the PLC application and any important data files that must be preserved.

The application backup and data backup may involve different procedures. Confirm that the files needed for recovery are available and that the maintenance team understands how to restore them.

6.4 Observe Electrostatic-Discharge Precautions

Memory cards and their electronic contacts can be vulnerable to electrostatic discharge. Use appropriate ESD handling procedures, avoid touching exposed contacts, and store the card in suitable protective packaging when it is not installed.

Inspect the card and connector for visible damage or contamination before installation.

6.5 Check Data Retention Requirements

Because SRAM is volatile, determine how data is retained when the controller is powered down or the card is removed. Follow the manufacturer’s guidance for any applicable backup battery, retention arrangement, and replacement procedure.

Do not assume that removing a card preserves all stored information. If critical production data is involved, confirm the approved backup and recovery method before carrying out maintenance.

6.6 Verify System Operation

After installation, use the approved engineering tools and procedures to verify that the processor recognizes the memory expansion and that the application can access the required data files.

Review controller diagnostics, application status, and relevant operating parameters. Before returning the equipment to normal production, validate any functions that depend on stored data.

7. Compatible System Components

The following table describes the main components and functions associated with the TSXMRPF004M. It does not guarantee that all listed items can be combined in every configuration.

8. Related Memory Expansion Models

The following models belong to related Schneider Electric Modicon memory-product families. They are comparison candidates, not guaranteed direct replacements for the TSXMRPF004M.

The TSXMRPF004M is designed for dedicated SRAM file-memory storage, whereas the TSXMRPC series provides configurable application/file memory. The TSXMFPP series uses Flash EPROM for application memory. These differences affect how the cards are used and mean that a model from another series should not be substituted without checking the processor documentation.

Although TSXMRPF008M provides a higher nominal file-memory capacity, it should not be treated as a direct replacement unless the exact processor and system configuration explicitly support it.

9. Key Advantages

Dedicated File-Memory Capacity

The TSXMRPF004M provides a nominal 4096 KB of SRAM file-memory capacity for supported Modicon Premium processor configurations.

Support for Existing PLC Applications

For compatible legacy installations, the card can help maintain established data-file storage functions without automatically requiring replacement of the entire PLC platform.

Support for Production Data Storage

Where the application supports the required file operations, the card can be used for data associated with production recipes and other process-related information.

Compact Physical Format

The supplied dimensions are 130 × 90 × 30 mm, with a weight of 0.076 kg. Confirm physical fit and slot compatibility against the installed processor and the original hardware documentation.

Useful for Legacy Spare-Parts Planning

Maintaining the correct spare memory card can be valuable for facilities that rely on older PLC equipment. Exact part-number verification and a documented data-recovery procedure are essential parts of this strategy.

10. Technical FAQs

Q1: What is the Schneider Electric TSXMRPF004M?

The TSXMRPF004M is an SRAM file-memory expansion designed for compatible Schneider Electric Modicon Premium PLC processors.

Q2: What is the memory capacity of the TSXMRPF004M?

The nominal file-memory capacity is 4096 KB, equivalent to 4 MB.

Q3: Which processors are compatible with the TSXMRPF004M?

The documented processor families include TSX572 to TSX576 and TSXPCI572/3. Verify the complete processor reference and the relevant hardware configuration before purchase.

Q4: What is the difference between TSXMRPF004M and TSXMRPC768K?

The TSXMRPF004M is a dedicated SRAM file-memory expansion with 4096 KB of file-memory capacity. The TSXMRPC768K is a configurable SRAM application/file memory expansion with a different capacity and allocation arrangement. They should not be considered interchangeable without checking system requirements.

Q5: Can the TSXMRPF004M store manufacturing recipes?

It is intended for SRAM data-file storage, and Schneider Electric’s platform documentation identifies manufacturing recipes and production data as use cases for this memory-card category. Actual support depends on the PLC application and software configuration.

Q6: Is the TSXMRPF004M discontinued?

Yes. Schneider Electric product information identifies the model as discontinued and indicates that no direct replacement is listed. Service and support arrangements depend on the applicable regional lifecycle information.

Q7: What are the dimensions and weight of the TSXMRPF004M?

The supplied dimensions are 130 × 90 × 30 mm, and the supplied weight is 0.076 kg.

Q8: Can the TSXMRPF008M replace the TSXMRPF004M?

Not automatically. Although the TSXMRPF008M belongs to the same general file-memory product category and has a higher nominal capacity, compatibility must be confirmed for the exact processor and system configuration.

Q9: Does the memory card increase PLC processing speed?

No. The TSXMRPF004M provides additional file-memory capacity. It does not independently increase processor speed or add new control functions.

Q10: Should the memory card be backed up before replacement?

Yes. Back up the PLC application and important data files using the approved procedure before replacing the card. Confirm data-retention and restoration requirements before beginning maintenance.

11. Procurement and Replacement Considerations

The TSXMRPF004M is a legacy automation component, so procurement should prioritize exact identification and verified compatibility.

Before placing an order, confirm the full part number, supported processor, required memory function, and installation slot. If the card is offered as new old stock, surplus, or refurbished, request confirmation of the actual condition and whether the item has been tested.

For replacement projects, establish whether the original card was used for production data, manufacturing recipes, or other application-specific files. Confirm how this data will be backed up and restored, and avoid assuming that a replacement card will automatically contain the required files.

If an alternative model is proposed, compare the memory type, storage capacity, processor compatibility, slot requirements, and software support. A higher-capacity card is not necessarily a valid substitute.

For critical production systems, plan the work around an approved shutdown or maintenance window, retain verified backups, and validate the relevant control functions before returning the equipment to normal operation.

12. Conclusion

The Schneider Electric TSXMRPF004M SRAM File Memory Expansion is a dedicated 4096 KB memory accessory for compatible Modicon Premium PLC processors. It is intended to provide additional file-memory capacity for supported industrial applications, including production data and manufacturing recipes.

With a supplied weight of 0.076 kg and compatibility covering specified processor families, the TSXMRPF004M can be relevant to maintaining existing automation installations that rely on legacy Modicon Premium hardware.

Because Schneider Electric has discontinued this reference and lists no direct replacement, users should confirm processor compatibility, data-retention requirements, product condition, and replacement suitability before purchasing or installing the card. Accurate identification and a verified recovery plan are important for minimizing risk when maintaining legacy industrial control systems.