The Siemens 6ES5374-0AA11 is a non-volatile EPROM memory submodule designed for the Simatic S5 programmable logic controller (PLC) family. This module provides reliable, permanent storage for user programs and configuration data, ensuring that critical automation sequences remain intact even in the event of total power loss or battery failure. It is a critical component for maintaining system availability in legacy industrial control environments.
This memory module is widely used in legacy automation systems across various sectors, including power generation, water treatment, material handling, and heavy manufacturing. It is primarily utilized to store stable, production-ready control logic that must be protected against accidental erasure or memory corruption.
| Model | 6ES5 374-0AA11 |
| Brand | Siemens |
| Product Family | Simatic S5 |
| Memory Type | EPROM |
| Data Retention | > 10 years |
| Operating Temperature | 0 to 60 deg C |
| Storage Temperature | -40 to 70 deg C |
| Power Consumption | 0.5 W (typical) |
Is this module erasable? Yes, as an EPROM, it can be erased using ultraviolet light exposure through the quartz window, allowing for reprogramming if necessary.
Does this module require a battery? No, this is a non-volatile EPROM module and does not require a battery to retain its programmed data.
Our production line was down due to a faulty Bently Nevada monitor. We found it in stock here and they shipped it via DHL immediately. Back in operation within 48 hours—truly a lifesaver for our plant.
Finding brand new, original modules is critical for our safety. This team delivers factory-fresh components with full certification. Their commitment to only selling new products makes them our most trusted partner.
We have sourced Honeywell and Schneider parts here for two years. Every shipment arrives well-packaged with original factory seals intact. Clear communication and the best lead times in the industry.