Siemens 6ES5374-2FM21 Simatic S5 Memory Card

Siemens 6ES5374-2FM21 Simatic S5 Memory Card

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DescriptionThe Siemens 6ES5374-2FM21 is a specialized memory module engineered for the Simatic S5 PLC product line. This non-volatile storage card...

SKU: 6ES5374-2FM21

Manufacturer: Siemens
Product No.: 6ES5374-2FM21
Product Type: PLC Memory Module
Product Origin: Germany
Payment:T/T, Western Union
Weight: 100g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Description

The Siemens 6ES5374-2FM21 is a specialized memory module engineered for the Simatic S5 PLC product line. This non-volatile storage card serves as a reliable medium for storing user programs, configuration parameters, and logic sequences. Designed for demanding industrial environments, the module utilizes robust EPROM/EEPROM technology to ensure that critical controller data remains intact during power cycles or system outages. Its solid-state design eliminates the need for battery backup, providing a stable, maintenance-free solution for long-term program retention in legacy automation systems.

Features

Non-Volatile Storage: Maintains data integrity without the requirement for internal batteries.
Rugged Design: Engineered to withstand the rigors of heavy industrial environments, including thermal cycling and vibration.
Direct Interface: Designed for seamless integration into the Simatic S5 CPU memory slot via high-reliability edge connectors.
Write Protection: Includes integrated circuitry to prevent accidental data corruption or unauthorized program overwrites.
High Reliability: Optimized for long-term performance in continuous-operation applications.

Applications

This memory module is widely utilized in legacy automation infrastructure, including chemical processing facilities, power generation plants, and large-scale manufacturing lines where Simatic S5 controllers remain in active service. It is essential for rapid recovery of control logic following system power resets.

Technical Specifications

Model	6ES5374-2FM21
Brand	Siemens
Series	Simatic S5
Memory Technology	Flash EPROM / EEPROM
Operating Voltage	5 VDC (via CPU slot)
Data Retention	10 years minimum at 55 deg C
Operating Temperature	0 to 60 deg C
Storage Temperature	-40 to 70 deg C
Relative Humidity	95% non-condensing

Installation Guidelines

Power Status: Always ensure the CPU power is disconnected or the system is in a safe state before inserting or removing the memory card.
Handling: Observe standard ESD (Electrostatic Discharge) precautions when handling the module to prevent damage to internal components.
Seating: Ensure the card is firmly seated in the dedicated CPU slot to maintain consistent contact across the gold-plated pins.
Environment: Verify that the control cabinet environment is within the specified temperature and humidity ranges to ensure optimal longevity.
Cleaning: Keep the edge connector area free of dust and debris to minimize contact resistance.

FAQ

Does this module require a battery?

No, the 6ES5374-2FM21 uses non-volatile memory technology, which does not rely on batteries to retain data.

Is this module compatible with all S5 CPUs?

This card is designed for specific Simatic S5 series controllers. Please consult your CPU hardware manual to verify compatibility with the 6ES5374-2FM21 order code before installation.

What's clients say about us

Excellent Emergency Support!

Our production line was down due to a faulty Bently Nevada monitor. We found it in stock here and they shipped it via DHL immediately. Back in operation within 48 hours—truly a lifesaver for our plant.

Mark Thompson

Maintenance Manager, USA

Reliable Source for New Spares

Finding brand new, original modules is critical for our safety. This team delivers factory-fresh components with full certification. Their commitment to only selling new products makes them our most trusted partner.

Robert Hoffmann

Engineering Lead, Germany

Top-tier Service and Quality

We have sourced Honeywell and Schneider parts here for two years. Every shipment arrives well-packaged with original factory seals intact. Clear communication and the best lead times in the industry.

Lucas Müller

Operations Director, Germany