28.6 SUMMARY

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Networks come in a variety of topologies, but buses are most common on factory floors.

The OSI model can help when describing network related hardware and software.

Networks can be connected with a variety of routers, bridges, gateways, etc.

Devicenet is designed for interfacing to a few inputs and outputs.

Controlnet is designed for interfacing between controllers.

Controlnet and devicenet are based on CANbus.

Ethernet is common, and can be used for high speed communication.

Profibus is another control network.