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The actuator sensor interface (AS-Interface or AS-i for short) is the simplest type of industrial networking. The manufacturer-independent system is suitable for the simple, usually binary networking of actuator and sensors at the lowest field level. It is particularly suitable for the communication between an industrial controller and the distributed actuators and sensors. The AS-Interface enables you to replace a parallel-wired cable harness with a simple two-wire line common to all sensors and actuators. In terms of the topology, there are practically no restrictions: In addition to tree structures, star and ring topologies can also be implemented, and a new segment can be inserted at each bus location.

The AS interface operates according to the master/slave principle. The AS-i master module controls the slaves (sensors/actuators) that are connected via AS-i cables. The AS interface operates according to the master/slave principle. The AS-i master module controls the slaves (sensors/actuators) that are connected via AS-i cables.

The AS-i block library for PCS 7 can be used with the following AS-i master and link modules:

  • CM AS-i Master ST (in ET 200SP station) (from engineering software V8.1)

  • CP 343-2 (in ET 200M station)

  • CP 343-2P (in ET 200M station)

  • DP/AS-i LINK Advanced single master

  • DP/AS-i LINK Advanced dual master

  • IE/AS-i LINK PN IO single master (from engineering software V8)

  • IE/AS-i LINK PN IO dual master (from engineering software V8)