Open distributed digital control system

摘要

An open network system includes a network and modules connected thereto, one of said modules being an operator station, each module including an internal bus operatively connected to the network, a module central processing unit (CPU), and a module memory, both being coupled to the internal bus. An interface to at least one foreign system allows display information from the foreign systems and from the network system to be displayed. A processor receives display information from the foreign system and also provides control information for the display unit. A graphics element connected to the processor and to the internal bus generates formatted display information from that received from the processor and the internal bus in response to the control information from the processor.