In recent years, automation technology has migrated to new methods of transferring information. Increasingly, field-level devices such as sensors and actuators have internal intelligence capabilities and higher communication demands. The AS-i bus system provides the solution for a digital serial interface with a single unshielded two-wire cable which replaces traditional cable harness parallel wiring between masters and slaves.
AS-i technology is compatible with any fieldbus or device network. Low-cost gateways exist to use AS-i with CAN, PROFIBUS, Interbus, FIP, LON, RS-485 and RS-232.
The AS-i uses the Isolation Penetration Technology. The AS-i follows the ISO/OSI model to successfully implement the master/slave communication.