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Process management system, local process management network in process management system, inter-regional server in local process management network, and data transmission method in process management system
Process management system, local process management network in process management system, inter-regional server in local process management network, and data transmission method in process management system
The distributed process control system has a number of geographically located zones (12,14)and bidirectional communication is made using satellite link (18) channels (20,22). Each zone has an inter zone server computer (32,56) and this together with data bases (30,54) and user interfaces (28,52) connect over LAN networks (34,58) with process controllers (24,26,50).
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