AS-i is now even better: With AS-Interface from Siemens http://www.siemens.com/as-interface you can quickly connect sensors and actuators in compact machines or large plants to the controller. 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!