# ControlNet

Protocols · `ControlNet` · verification: source checked

ControlNet is a CIP network used for deterministic transport of time-critical I/O and peer-to-peer interlocks. It supports trunkline-dropline, star and tree topologies and can use redundant communication or intrinsically safe hardware options. ControlNet uses the Common Industrial Protocol for its upper layers and follows the OSI seven-layer model.

## Specification

| Property | Value |
|---|---|
| Transports | other |
| Architecture | producer consumer |
| Encoding | binary |

## Safety

- Hardware options are offered for applications requiring intrinsically safe hardware.

## Study notes

- ControlNet uses CIP for its upper protocol layers.
- ControlNet follows the OSI seven-layer model.
- Topology options include trunkline-dropline, star and tree.
- Redundant network communication is available.
- The document references 'Technology Overview Series: ControlNet' for a comprehensive overview.
- CIP is described as media-independent and covers control, safety, energy, synchronization & motion, information and network management.

## Sources

1. [ControlNet® | ODVA Technologies | Technology & Standards](https://www.odva.org/technology-standards/other-technologies/controlnet/) (accessed 2026-10-25)

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