AS-Interface

AS-Interface – the smart communication standard for universal connection of the field level to the control system

The AS-Interface (AS-i) – the Actuator-Sensor-Interface, to be more precise – is a smart bus system for the field level that connects all the sensors and actuators in the field to the higher-level control system more simply, flexibly and efficiently than any other.

The structure of a complex automation system is not always clear at first glance. The field level in particular, with its large numbers of devices with real-time requirements, needs a clear structure.

That is exactly what the AS-i fieldbus delivers: Via a simple two-wire cable – the yellow AS‑i cable – in an AS‑i network up to 62 bus nodes can be connected to the AS‑i master and simultaneously supplied with power. The standard here is robust data transmission in a rugged environment with a high degree of protection for the AS-interface.

AS‑i from Siemens has everything in its favor

• Complete AS-i product range for bus-based standard and safety technology from a single source
• System-wide integration of the AS‑i devices into SIMATIC, SINUMERIK and the TIA Portal engineering framework
• Integration of ASIsafe applications into SIMATIC F controller safety programming
• Central configuration of standard and safety technology in the TIA Portal and in STEP 7 Classic – just one engineering framework for controller, AS‑i Master and safety
• Quick diagnostics of master and slave components via web browser, HMI or TIA Portal
• Planning, calculation and verification of the whole safety chain based on ASIsafe in the Safety Evaluation Tool (TГњV-approved)
• Integration of lower-level AS-i networks into the PCS 7 process control system
• Global spare parts logistics, consulting and service