Automation•9 min read•Dec 18, 2025
Industrial Networks: Comparing EtherCAT vs. PROFINET in Multi-Axis Robotics
Analyzing cycle times, jitter, and topology options for real-time synchronization of robotic arm joints and PLC controllers.
1. Real-Time Network Requirements in Robotics
Multi-axis robotic arms require sub-millisecond synchronization. Even minor packet jitter can cause path errors or stress gearboxes. Choosing the right network protocol is critical.
EtherCAT (Ethernet for Control Automation Technology) uses 'processing on the fly', allowing packets to be read and written as they pass through devices. This delivers cycle times below 100 microseconds and negligible jitter.
Article AuthorDr. Kenji TanakaPrincipal Engineer
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