Four software packages now complement the CENTUM series of distributed control systems. The ExaPlog, ExaPilot, ExaBif, and ExaOPC software programs provide the tools to analyze, optimize, and improve the efficiency of total plant operation. The ExaPlog and ExoPilot software gathers and saves the historical file from the system in its own database and provides analytical information. The ExaBif package is a batch scheduler, which uses an ISO S88 interface to the batch control system to read master recipe data, download scheduled batches, and acquire batch progress event data. The ExoOPC supports OPC (OLE for Process Control), so process information can be shared with external PIMS, MES or ERP applications.