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Powerlink real-time protocol

Ethernet Powerlink is a deterministic real-time protocol for standard Ethernet. It is an open protocol managed by the Ethernet POWERLINK Standardization Group (EPSG). It was introduced by Austrian automation company B&R in 2001.

Ethernet Powerlink expands Ethernet with a mixed polling and timeslicing mechanism. This provides:

  • Guaranteed transfer of time-critical data in very short isochronic cycles with configurable response time
  • Time-synchronisation of all nodes in the network with very high precision of sub-microseconds
  • Transmission of less timecritical data in a reserved asynchronous channel

Modern implementations reach cycle-times of under 200 µs and a time-precision (jitter) of less than 1 µs.



Some of our Powerlink Sponsors include...

JVL Industri Elektronik A/S

JVL Industri Elektronik A/S is a leading company in the production and development of integrated AC servo and stepper motors.

Maxon Precision Motors

maxon motor is the worldwide leading provider of high-precision drive systems. For 50 years, we have focused on customer-specific solutions & quality.


Our POSITAL encoders support the standard (serial, parallel) and fieldbus interfaces (DeviceNet, Profibus, and Interbus.)

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