Part

Fieldbus

You might say: robot network, bus

A fieldbus is the wired control network between computers, motor drives and sensors.

What it does

It carries commands and measurements with a chosen bandwidth, latency and timing guarantee.

Ask

Is the bus cycle short, synchronized and deterministic enough for the control loop?

What to look for

1. Wired links between computers, drives and sensors
2. Commands and measurements on the bus

Catalogue: Bus

• CAN / CANopen: Classic CANopen is robust and low cost; CiA publishes bit-timing and network-length guidance.
• EtherCAT: EtherCAT processes frames on the fly for real-time control; ETG states a design focus of short cycle times and low synchronization jitter.
• Ethernet / USB: Ethernet or USB is useful for high-bandwidth cameras, lidar and computers; its timing depends on transport and topology.

Sources

1. EtherCAT Technology Group, EtherCAT - the Ethernet Fieldbus, Introduction and Features 1.1–1.2EtherCAT is a real-time Industrial Ethernet technology originally developed by Beckhoff Automation.

Use it on your project

teardown-apply: hold "Fieldbus" (fieldbus) from the teardown at https://teardownatlas.com/robotics/ against my project

Paste it into a coding agent that has the teardown skills.

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