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Connection

A connection transmits signals between ports. For connections between sibling nodes, an output port is always connected to one or more input ports. For connections between parent and child, connections go either from the parents' inputs to children's inputs, or children's outputs to the parent's outputs.
Connections going from the parent's input port to children's input ports propagate the parameter set on the parent's port to the connected ports.
  • When transmitting, connected output ports receive the signals immediately as they appear on the sender's output port.
  • When propagating parameters, inherited parameter values get set on connected input ports as you enter them.
Connection between nodes
Connection from parent to child

One-to-many and many-to-one

When a single output port has multiple inputs connected, all connected input ports will receive the same signal that was sent by the output.
Similarly, when multiple output ports are connected to a single input port, the input port will receive each individual signal sent by the outputs.
In the example below, both parameter nodes ("A" and "B") receive the signal to their "read" input, telling them to send out the value they store. Then the "log" node receives and prints out both signals sent by the parameter nodes.
The order of sending signals through one-to-many connections, and the order of receiving signals through many-to-one connections is not determined. Eg. in the example below, the order of "A" and "B" appearing th the output window is incidental.
One-to-many and many-to-one
Traffic flowing through connections can be observed by right clicking on the connection and selecting "Show traffic".