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AS-Interface – the clever field bus standard

AS-Interface (AS-i) provides you with an effective and powerful bus system which connects all sensors and actuators on the lowest field level with the superior control – with unrivaled ease, safety and integration!

AS-Interface serves as a cost-favorable feeder for PROFIBUS and PROFINET and supports easy engineering. It is standardized in accordance with IEC 62026-2. All components by Siemens comply with the AS-i Specification and are correspondingly tested and certified. The AS-i standard is manufacturer-neutral.

SC17.5 and SC22.5  AS-i SlimLine Compact module

The quick-to-connect space saver: the world’s smallest AS-i module


The innovative AS-i

With the modular AS-i master in the SIMATIC ET 200SP distributed I/O system, Siemens offers you a powerful, integrated solution for linking process signals to SIMATIC and SINUMERIK. In this way you can adapt your machine exactly and flexibly to the requirements of your customers.


The modular AS-i Master in ET 200SP

Consistent integration of process signals with SIMATIC ET 200SP - also with intelligent preprocessing and safety technology.


AS-i Master for S7-1200

Perfect interaction of all components


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