The In CHOP gets channels that are connected to one of the inputs of the component. For each In CHOP inside a component, there is one input connector added to the In CHOP's parent component.
Parameters - In Page
Num Channels - If On, and the number of incoming channels does not match this value, an error is generated.
Names - When used with Num Channels the input is scanned for channels matching these names. All other channels are ignored and not passed through. This is a way of filtering out unnecessary channels without requiring a Select CHOP or Delete CHOP. When used without Num Channels the input channels are simply renamed according to this pattern.