AS-Interface: Sustainable Fieldbus Technology Reduces Material and Installation Costs
AS-Interface (ASi) continues to gain traction as a sustainable and resource-efficient fieldbus wiring solution, according to a July 2025 industry analysis by Bihl+Wiedemann . The technology enables connection of sensors and modules using a single unscreened two-conductor profile cable that carries both standard and safety data plus power .
Key Advantages:
Piercing Technology: Components are connected to the profile cable without special tools, eliminating the need for pre-configured cables and multiple connectors
Material Reduction: Compared to Ethernet-based fieldbus solutions, ASi saves approximately €100-150 per module connection in connectors and cables
Resource Efficiency: The single two-conductor profile cable significantly reduces copper and plastic usage compared to traditional parallel wiring
Installation Efficiency:
A traditional motor starter with 13 wires takes approximately 60-90 minutes to wire. The same task using ASi with an active distributor and two-conductor profile cable is completed in approximately two minutes . According to the analysis, wiring costs can be reduced by nearly 70% compared to other fieldbus systems .
ASi-5 now supports IO-Link and IO-Link Safety devices, enabling integration into Industry 4.0 and IIoT structures .
