Nodes in Node-RED have inputs and outputs. The flow of the information is always from left to right. Nodes can collect signals from devices like sensors or buttons, process signals, and send them to controlling units like VERTEX.
Input nodes
The nodes that generate signals are called input nodes. For example, a DALI2 devs common node is an input node. Using this node, you can configure signals from DALI multisensors or buttons. When a sensor detects the movement, the node passes the signal further.
DALI2 devs common node - an example of the input node.
Processing nodes
All the nodes that can modify the signal coming from the input nodes are called processing nodes. The input signal is modified within the node. An example of such a node is the vertex action node.
Example:
The signal comes out of the DALI2 devs common node’s output. The vertex action node receives the signal and then processes it according to its configuration, which is done by the user.
Vertex action is an example of a processing node.
Output nodes
These nodes forward the processed signal to application controllers e.g. VERTEX. We use the Vertex cluster for this purpose. Each program should end with the Vertex cluster node.
The vertex cluster node is an output node.
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