Specifications

Overview
PlantScape Server and Client Configuration Guide 337
The requirements for implementing a distributed server architecture for
PlantScape are:
• Areas must be enabled.
• Area codes must be unique across all servers (see “Alarms” on page 343).
• All points assigned to an area must be defined on the server where the area
is local.
• Point IDs must be unique across all servers (see “Point IDs” on page 339).
• Every point that will be accessed from more than one server must be
assigned to an area.
• Each server database must contain definitions for its local areas and for all
remote areas that it needs to access.
• Each server database must contain a definition for itself (This Server) and for
all servers it needs to access. On each server, the definition for “This Server”
includes an alias for use on the other servers (see “Configuring Servers to
Share Data” on page 352).
• All displays that a Station needs to access must be accessible through the
Displays Path defined for the Station.
• Alarm message indexes and text should be the same on all servers (see
“Specifying an Alarm Message Index” on page 165).
• Each server database must contain all acronyms used on any displays it
needs to access, including those copied from remote servers.
Figure 15.2 Plant-Wide Distributed System
Plant B
Plant A
Plant C
Plant-Wide Network
plscpcg.book Page 337 Monday, May 28, 2001 10:11 AM