Siemens 6AV3971-1NA01-0CA0 Memory Submodule for OP20

Core Memory Expansion for OP20 Operator Panels

The Siemens 6AV3971-1NA01-0CA0 is a dedicated memory submodule for the OP20 operator panel within the SIMATIC HMI product family. This module provides a 64 KB storage capacity for the operator interface, enabling efficient data management and process control . Its preloaded firmware supports the AS511, FAP, and L1 communication protocols .

Designed for Seamless Integration and Reliable Operation

The submodule features a compact 48-pin connector design that integrates directly into the OP20 panel . Its robust construction ensures stable, reliable performance in industrial environments where data integrity is critical . Furthermore, this module enables simple upgrades and replacements, making it straightforward for maintenance teams to support existing production lines.

Technical Specifications

Application in Legacy System Support

Plant engineers use this memory submodule to maintain and support existing OP20-based HMI systems. The Siemens 6AV3971-1NA01-0CA0 is a critical component for lifecycle management of classic Siemens HMI platforms. Therefore, sourcing tested and functional units is essential for sustaining reliable operation in legacy industrial environments.