We use cookies to optimize our website. If you continue using this website, you automatically agree to the use of cookies. More informationOK

+49 621 33996-0
  • DE
  • EN
  • AS-Interface

    AS-Interface - simple, efficient, innovative

    AS-Interface (Actuator Sensor Interface) is a system and manufacturer-neutral technology. As a worldwide standardized bus system it connects sensors and actuators to a host controller over a common data transmission path.


    AS-Interface (Actuator Sensor Interface) is a standard for fieldbus communication which replaces parallel wiring and is based on the master-slave principle. The master exchanges data cyclically with the (up to) 62 connected slaves. Typically each slave can have four inputs for reading sensors, and four outputs for controlling actuators.


    AS-Interface enables simple installation, configuration and maintenance. The simplified cabling minimizes wiring mistakes while at the same time offering free selection of network topology, along with added flexibility and ruggedness. The significantly reduced installation effort and expense make AS-Interface a very cost-effective technology.

    Functional safety

    The Safety at Work concept also allows the safety components – safe sensors and actuators – to be directly controlled in the safety monitor and seamlessly integrated into virtually any common automation system. Since the safe and non-safe signals are sent on the same cable, significant savings compared with conventional safety technology using parallel wiring can be realized in terms of cost and installation time, as well as increased safety, thanks to the transparency of the installation.

    Facts & data

    With 36 million installed nodes and over 20 years of market experience, AS-Interface is one of the most successful bus systems in the world. The success of AS-Interface is based on the system-specific properties and the high level of cooperation among the companies involved with its development.

    You too can profit from an AS-Interface solution!


    to install, configure, operate and expand


    it’s rugged, noise immune, diagnostics-friendly and cost-effective


    just one cable is used for data and power, can be configured to any topology, highly compatible

    Contact us

    Bihl+Wiedemann GmbH
    Flosswoerthstrasse 41
    68199 Mannheim

    +49 621 33996-0