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  1. Advantages of AS-i
  2. System overview

Advantages of AS-interface

The AS-i protocol simplifies the installation, setup, and maintenance of I/O modules and enhances operation and system reliability:

Simple installation, set-up and maintenance

  • Standardised 2-wire flat cable for data and power
  • Toolless installation of I/O modules for quick mounting
  • Minimal installation errors due to profiled flat cable
  • I/O module test without PLC and fieldbus
  • Intuitive device replacements thanks to automatic addressing
  • Status indications on the slaves
  • Flexible topology

 Reducing cost and effort

  • Standardised sensors / actuators, independent of the controller / fieldbus
  • Fewer I/O cards / terminal boxes = smaller cable ducts / control cabinets
  • Shorter sensor and actuator cables
  • Lower calculation risks due to the greatly reduced wiring complexity
  • Sophisticated diagnostics for fast troubleshooting
  • Huge energy saving with fully decentralizsed pneumatics

 Operation and system realiability

  • Guaranteed transmission time < 10ms with 248 inputs and outputs
  • Very high EMC immunity in high-level environments
  • Symmetry display of the AS-i voltages
  • Short circuit and wire break monitoring
  • For use in harsh industrial environments and in wet areas up to IP69K
  • For functional safety up to PL e / SIL 3
  • ATEX II 3D / 3G

Read more about what is AS-i and how it work.