ARCNET, or Attached Resource Computer Network, is a widely used local area network (LAN) technology that operates on the physical layer of the OSI model. It is a deterministic network protocol that enables devices to communicate and share resources within a limited geographic area, typically within a building or campus.
ARCNET is characterized by its simplicity and flexibility, as it can be implemented using a variety of transmission media, including coaxial cable, twisted pair, or fiber optic cable. It uses a token-passing mechanism to control access to the network and ensure fair communication between devices.
In terms of architecture, ARCNET employs a bus topology where all devices are connected to a common cable known as the ARCNET bus. Each device on the network has a unique address and communicates by sending data packets called tokens. When a device has the token, it can transmit its data to the intended recipient.
With its deterministic nature and low error rates, ARCNET is suitable for applications that require real-time or mission-critical capabilities, such as industrial control systems, process automation, and data acquisition. However, its bandwidth is limited, with data rates typically ranging from 2.5 to 10 megabits per second.
Overall, ARCNET provides a reliable and efficient method of communication for local area networks, especially in environments that demand deterministic behavior and low latency. Its simplicity and adaptability have made it a popular choice for various industries requiring dependable LAN connections.
