Siemens 6AV3971-0NA03-0EA0 HMI Memory Module

The 6AV3971-0NA03-0EA0 stores project data for older SIMATIC OP and TP panels. This memory module fits directly into the rear expansion slot of your HMI. It allows operators to back up recipes, screens, and tags securely.

You can rely on this module for long-term data retention. The uses non-volatile FLASH technology for this purpose. Consequently, it requires no battery to maintain stored information. This design eliminates periodic maintenance and replacement costs entirely.

Technical Specifications and Physical Parameters

This module does not store any energy internally. It draws a tiny current only during read or write operations. The 6AV3971-0NA03-0EA0 operates passively when the HMI remains idle. Below is a complete breakdown of its technical characteristics.

Interface and Installation Process

The 6AV3971-0NA03-0EA0 uses a simple 12-pin male connector for attachment. You insert this module into the dedicated slot on the HMI backplate. No tools or external cables are necessary for this installation. The panel automatically detects the module upon the next power cycle.

Transferring data from the HMI to the module requires no special software. You just use the standard “Copy to Memory Module” function inside ProTool. The 6AV3971-0NA03-0EA0 completes this backup process in under thirty seconds.

Operational Advantages for Maintenance

This module provides a fast disaster recovery solution for production lines. You can swap a faulty HMI and restore its project within minutes. The 6AV3971-0NA03-0EA0 holds the configuration even after decades of inactivity. Engineers greatly appreciate this reliability for legacy system support.