This memory card provides reliable program and data storage for SIMATIC S5 systems. It stores user applications, system parameters, and configuration data securely. The unit plugs directly into the designated slot on the central unit. Its non-volatile design retains all data without requiring a backup battery.
Memory Architecture and Storage Capacity
The memory card utilizes high-quality EPROM technology for permanent data retention. It stores complete application programs for various automation tasks. The unit supports both program logic and symbolic variable storage. An onboard write-protect switch prevents accidental data modification.
| Parameter | Specification |
|---|---|
| Model | 6ES5374-2FH21 |
| Memory Type | EPROM, non-volatile |
| Storage Capacity | 16 KB |
| Data Retention | 10 years minimum |
| Write Endurance | 100 cycles maximum |
| Access Time | 200 ns typical |
| Program Capacity | Up to 2,000 logic rungs |
| Data Word Storage | 2,048 words |
| Memory Organization | 16-bit word structure |
| Interface Type | 24-pin DIL connector |
| Write Protection | Hardware switch |
| Compatibility | S5-115U, S5-130U, S5-135U, S5-150U |
| Power Supply | 5 V DC from CPU |
| Current Draw | 60 mA typical |
| Operating Temperature | 0 °C to 60 °C |
Physical Dimensions and Card Design
This memory card measures 90 mm in length, 35 mm in width, and 10 mm in depth. Its lightweight construction weighs approximately 0.03 kg. You can insert the card into the dedicated memory slot on the CPU. The card includes a raised grip for easy removal.
Program Storage and Application Handling
The 6ES5374-2FH21 stores complete S5 application programs permanently. You can upload programs from the CPU to the memory card for backup. The unit also supports program transfer between multiple systems. A label area on the card allows content identification.
Installation and Data Protection
You should power off the system before installing or removing the card. The hardware write-protect switch prevents accidental program overwrites. You can erase the card using UV light for reprogramming. Always handle the EPROM window with care to avoid data corruption.
System Compatibility and Application Use
This memory card works with all SIMATIC S5 PLC systems. You can use it for program backup and system duplication purposes. The unit also supports firmware storage for processor modules. It provides a reliable solution for machine-specific program storage.
Environmental Specifications and Handling
You should store the card in an anti-static bag when not installed. The unit operates reliably between 0 °C and 60 °C. It withstands humidity levels from 10% to 90%, non-condensing. Avoid exposing the EPROM window to direct sunlight or UV light.
Details
| Weight | 0.5 kg |
|---|---|
| Dimensions | 250 × 25 × 210 mm |
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