Siemens | Simatic S5 6ES5420-4UA12

Product Details

• Part Number 1 6ES5420-4UA12

Product Description

Siemens 6ES5420-4UA12 is a Digital Input Module for the Simatic S5 product family.

From a maintenance perspective, digital input hardware creates the path from field-level status signals to control logic, allowing the system to evaluate operating conditions and respond through configured sequences or protective actions. Maintenance planning should reference the installed hardware configuration.

In a SIMATIC S5 system, module selection is governed by the controller family, rack arrangement, electrical interface, and configured program. The exact article number should be matched before installation. Its role should remain distinct from that of similarly named assemblies.

In the signal path, this approach helps preserve the intended system function while keeping selection aligned with the documented ratings, capacity, and compatibility requirements. The surrounding rack and module arrangement should be reviewed before installation.

Product Documentation

• Common Part Typos 6ES5420-4UAI2, 6ES5420-4UAl2, 6ES54204UA12, 6ES54204UAI2, 6ES54204UAl2, 6ES542O-4UA12, 6ES542O4UA12

Reviews

5.0 Rating

"Frank, you're a Rock Star! Thank you for the quick response, and great customer service, very refreshing these days! Great pricing"

- Charles, Ontario, Canada

"DCS CENTER Really saved the day! I had the parts I needed in my hands the day after ordering ( I'm in Toronto Canada ). I highly recommend..."

- Steven T., United States

"We received the 6ES7141-1BF12-0XB0 module yesterday - thank you very much! We will probably order another one next week. Thanks"

- George C., United States

"James is the BEST! He makes sure all your questions are answered and that you're happy with your order before it's shipped. My part arrived right on time...."

- Katie, United States

"Dear Frank and James, This morning we tested the "new" IEPAF01 cards. Everything is fine!!! I want to express my thanks and my personal acknowledgement on how you..."

- Carmelo I., Italy

"Frank your customer service has been excellent, you go out of your way to help and support. Your response and feedback is exceptional, its a pleaure to engage..."

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