ViewPoint Manual

Functional Description
ViewPoint Manual—426801-001
5-2
Overview of ViewPoint Architecture
The TACL screen (if available) provides all the standard features of the TACL product,
plus the set of commands constituting the Define Process feature. This feature allows
you to define (and instantly switch among) various processes anywhere in the network.
In addition, you can switch to any of the other ViewPoint screens without exiting from
any of the defined processes.
The Network Status Summary screen provides various status reports about selectable
objects in the network. For example, a report might be about units started or units busy.
The Events screen provides a means of viewing current or past event messages that have
been generated by the various subsystems. The messages can be for such functions as
errors or failures, warnings, and requests for operator actions. Certain kinds of
messages can be designated as critical and are highlighted on the screen. Action event
messages also are highlighted.
Figure 5-2 shows a simplified conceptual arrangement for configuring a network to be
controlled by ViewPoint.
The central controlling process of the application is the ViewPoint TCP (terminal
control process). The network node on which TCP is running is called the network
Figure 5-1. Operator View of ViewPoint
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