References by DeltaV control modules to certain AS-i Bus parameters (referred to as signal-bearing parameters) can require an I/O software license. An AS-i Bus device can cause a demand for at most one I/O license regardless of how it is referenced by DeltaV control modules.
The table shows the signal-bearing parameters that can trigger license demand for an AS-i Bus device.
The system consumes a single license of the most expensive type used. The license costs are (from highest to lowest): DO and DI.