Nodes

Nodes

A “node” within the context of IO-Link Wireless can be defined as a fundamental unit or point within the wireless network established for communication between sensors, actuators, and controllers in factory automation. These nodes can represent various devices, both physical and virtual, such as sensors and actuators, that play a crucial role in transmitting data and instructions wirelessly. IO-Link Wireless ensures seamless and reliable communication by defining specific parameters, including a 5-millisecond real-time latency, support for up to 40 nodes, and a remarkable reliability level of better than 1e-9 Packet Error Rate (PER). This wireless protocol is designed to mimic the performance of wired systems, making the transition from cables to wireless technology smooth in industrial environments, and it uses advanced wireless technologies to maintain robust and interference-resistant communication.

In a broader context, the term “node” can also refer to a network or communication endpoint, which varies depending on the specific network and protocol layer under consideration. In telecommunications networks, a physical network node is an electronic device capable of transmitting and receiving information over a communication channel. It can include data communication equipment (DCE) like modems, hubs, bridges, or switches, as well as data terminal equipment (DTE) like computers, printers, or digital telephone handsets. For networks like LANs or WANs, each participating node typically has a network address, while in the case of the Internet or intranets, nodes are often host computers identified by an IP address. However, some data-link-layer devices may not have IP addresses but are still considered physical network nodes within LANs.

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