This new driver provides a native DeltaV I/O interface to the FMC Topside Processing Unit (TPU). Key features include support for read and write access to TPU AO, AI, DO and DI point tags, simplex or redundant installations, time synchronization from DeltaV to the FMC Subsea system, monitoring quality of connection and automatically restarting communications when connection is lost, auto configuration of the interface from the FMC SmartTool configuration export file.