SYMPHONY

process control instrumentation, namely, operator interface units, namely, operator stations, engineering stations, namely, process control units, namely, process controller modules for modulating and sequential control, process control communication modules, namely, input and output interfaced units, namely, digital input and output modules, analog input and output modules, fieldbus input and output modules, termination modules for input and output wiring, namely, information management units, namely, process historians, process data interface modules, application programming interface; power modules for process controllers, process communication modules, input and output interface units, information management units, namely, process control application software, namely, operator interface, engineering and tuning, process history, data acquisition, information management, network management