Art-Net
Art-Net is a royalty-free communication protocol based on the Ethernet protocol suite, primarily used for transmitting large amounts of DMX512 lighting control data over a network. Developed by Artistic Licence Holdings Ltd, it provides a method for distributing lighting control signals from a lighting console or computer to lighting fixtures and other stage equipment.
Art-Net utilizes the User Datagram Protocol (UDP) and is a packet-based protocol. Each Art-Net packet contains a header section that identifies the packet as Art-Net and specifies the version, sequence number, and other relevant information. The packet also includes the DMX512 data itself, typically 512 channels per universe.
Key features and characteristics of Art-Net include:
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Network-based: Allows for the distribution of DMX data over a standard Ethernet network, eliminating the need for long DMX cable runs and providing greater flexibility in system design.
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Multi-universe support: Can transmit multiple universes of DMX data over a single network connection, significantly increasing the capacity of a lighting control system.
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Addressing: Utilizes a node-based addressing scheme, allowing devices to be uniquely identified and addressed on the network. The addressing scheme involves Net, Sub-Net, and Universe numbers.
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Data broadcasting: Employs broadcasting to transmit DMX data to all devices on the network, ensuring that all fixtures receive the necessary control information. Directed transmission via unicast is also supported.
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Device discovery: Supports mechanisms for devices to discover each other on the network, simplifying the configuration and management of complex lighting systems.
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Open protocol: Being royalty-free, Art-Net has been widely adopted by manufacturers of lighting consoles, lighting fixtures, and other stage equipment, leading to a high degree of interoperability.
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Versions: Art-Net has evolved through various versions, with newer versions adding features and improvements. Art-Net 4 is the current version, introducing features like enhanced RDM (Remote Device Management) support.
Art-Net is commonly used in a variety of applications, including:
- Live concerts and theatrical productions
- Architectural lighting installations
- Television studios
- Film sets
- Theme parks