Product Overview

The Siemens 6ES5374-2KL21 is documented as a 2 MB flash card for the SIMATIC S5 product environment. Because current detailed Siemens technical data for this exact complete order number was not confirmed in the accessible official support pages, procurement should be based on exact-part identification and installed-equipment verification.

This page retains only model-specific facts supported by the referenced Siemens documentation. Exact suffix, installed hardware and configuration should be checked before procurement.

Commercial Status

Verified Technical Data

System Fit and Applications

• Exact-part maintenance replacement in compatible SIMATIC S5 equipment
• Retention or transfer of validated S5 program data where the target device supports this card
• Legacy-system procurement requiring the complete 6ES5374-2KL21 order number

Compatibility and Procurement Checks

• Confirm the complete order number and documented 2 MB capacity.
• Verify card format, voltage and target-device support from the installed equipment documentation.
• Back up the existing application and confirm programming-device support before exchange.

Lifecycle Note

No current Siemens lifecycle wording was confirmed in the accessible official documentation for the exact complete order number 6ES5374-2KL21. Lifecycle status should therefore be reconfirmed against the current Siemens product record before purchase.

Frequently Asked Questions