1. First is when sending command to a device using output channel to change colout of LED in Schema
2. Second is to enter value of a calculated / input using Schema. Since this cannot be done directly, value for the input channel is to be updated to a output channel which is not connected to any device which in turn updates an input / calculated channel.
Hi,
Try creating a channel of the Calculated/output type having an output formula SetData()
It should help to change channel value according to user input.