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IO-Link

What Is IO-Link?

The advantages and working logic of IO-Link, which provides point-to-point smart communication at the sensor/actuator level.

3 min readUpdated: 2026-07-05

IO-Link is a point-to-point technology that provides smart (digital) communication over a standard sensor cable. Beyond measurement, the sensor also sends diagnostics, parameters and status.

  • Automatic parameter upload on device replacement
  • Cable/short-circuit diagnostics
  • Noise-free digital data instead of analog signals
IO-Link shortens maintenance time on sensor failures: when a device is replaced, parameters are automatically restored from the master.

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