PLCs, Power Supplies & Others

Product Overview

The Siemens 6ES5340-3KA41 provides non-volatile program storage for SIMATIC S5-115U, S5-95U, and S5-100U programmable logic controllers. This EPROM memory module securely holds user application code and system parameters for reliable automation operations. Additionally, this module offers a robust alternative to battery-backed RAM, eliminating the need for periodic battery replacements.

Technical Specifications

The 6ES5340-3KA41 features a compact form factor that fits directly into the memory slot of compatible S5 controllers. This module uses EPROM technology to retain data permanently without requiring an external power source. Furthermore, we note that this part has reached its end-of-life status, though many aftermarket suppliers still carry it.

Key Design Features

The 6ES5340-3KA41 comes with a quartz window that allows users to erase the chip contents using ultraviolet light . Since this module does not rely on batteries, it offers superior long-term data retention compared to RAM-based alternatives. Consequently, you can store this module for extended periods without worrying about data loss. The module also includes a protective label that covers the UV window, preventing unintended erasure from ambient light .

Integration and Programming

The 6ES5340-3KA41 works with Siemens EPROM programmers such as the 6ES5808-3AA11, which enables users to write application code onto the chip . You can insert the programmed module directly into the memory slot of your S5 controller. Therefore, this module supports rapid field replacement and simplifies maintenance procedures.

Application Use Cases

This memory module proves essential for industrial systems requiring secure, long-term program storage. Common applications include packaging machinery, conveyor controls, and automated assembly lines. Notably, the 6ES5340-3KA41 became obsolete on October 1, 2019, but remains widely available through the secondary market .

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