Scope and object This part of IEC 62026 specifies a method for communication between a single control device and switching elements@ and establishes a system for the interoperability of components with the specified communication interfaces. The complete system is called ??Actuator Sensor interface (AS-i)??. This standard describes a method for connecting switching elements@ such as low-voltage switchgear and controlgear@ standardized within IEC 60947@ and controlling devices. The method may also be applied for connecting other devices and elements. Where inputs and outputs I/O are described in this standard@ their meaning is regarding the master@ the meaning regarding the application is the opposite. The object of this standard is to specify the following requirements for control circuit devices and switching elements: ? requirements for a transmission system and for interfaces between a slave@ a master and electromechanical structures; ? requirements for a complete interoperability of different devices within any network@ when meeting this standard; ? requirements for an interchangeability of devices within a network@ when fulfilling the profiles of this standard; ? normal service conditions for the slaves@ electromechanical devices and master; ? constructional and performance requirements; ? tests to verify conformance to requirements.