DCS Center Warranty Included
Worldwide shipping via DHL, UPS, and Fedex
3-5 weeks. Rush Repair options are available.
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.
"Hi Frank and thank you for your quick response - good service. We look forward to doing more business with DCS"
- Serge, United States"Hey Frank, thank you for your great service and competitive pricing. We will definitely be using you again in the future."
- Patrick O., United States"We received the cables Frank. They are in great shape, including the connectors. Thanks for the good service."
- Larry A., 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, 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 StatesDCS Center sells new surplus and reconditioned products. This website is not sanctioned or approved by any manufacturer or tradename listed. DCS Center is not an authorized distributor or representative for the listed manufacturers. Designated trademarks, brand names and brands appearing herein are the property of their respective owners.
Keep your operation moving with fast access to the DCS and PLC components you need. Whether you are searching for a hard-to-find part, need a repair, or want help identifying the right replacement, DCS Center is here to simplify the process and minimize downtime.
Contact Us