Rockwell Automation FactoryTalk View Site Edition Users Guide - Manual (Page 162)

F ACTORY T ALK V IEW S ITE E DITION U SER ’ S G UIDE
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Parts of a local station application
A typical FactoryTalk View SE local station application consists of:
 The application root area. You cannot add areas to a local station application.
 An HMI server that provides FactoryTalk View components and services to
application clients.
A local station application can contain only one HMI server. The HMI server is
created automatically when the application is created, and has the same name as the
application.
 HMI project components such as graphic displays, HMI tags, and data log models.
 One or more data servers, providing clients with access to information in
programmable controllers, devices, and other data servers that comply with the OPC-
DA 2.05a specification, with or without the use of HMI tags.
Local station applications support a single RSLinx Enterprise data server, which must
run on the same computer as the application. Only OPC data servers (including
RSLinx Classic) can be located on other computers.
RSLinx Enterprise servers can be set up to subscribe to device-based alarms detected
in Logix5000 controllers. For more information, see Chapter 12, Setting up
FactoryTalk alarms.
 A list of users, plus the security codes that allow or deny these users permission to
access secured HMI project components at run time.
 Optionally, a FactoryTalk Tag Alarm and Event Server, to provide alarm monitoring
and control for tags in devices that do not have built-in alarm detection. For more
information, see Chapter 12, Setting up FactoryTalk alarms.
The software programs behind a local station application—the FactoryTalk Local
Directory, the HMI server, the HMI client, and the RSLinx Enterprise data server—must
be located on the same computer. Only OPC data servers can reside on remote computers.
The location of the FactoryTalk Local Directory that manages a local station application is
set up automatically, when you install FactoryTalk View Site Edition.
Every vendor’s OPC data server is different. Some contain their own tag databases, like the
tag database in an HMI server, while others reference the tag databases or addresses that
exist in controllers, as is the case with RSLinx and Logix5000.