Specifications

Niagara Release 2.3
Niagara Networking & Connectivity Guide
Glossary
GL-11
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U
URL Uniform resource locator. The global address of a document or other resource.
Within the context of Niagara, a URL is similar to a SWID. A SWID defines a
particular node in a Niagara station database, whereas a URL can include a SWID or
a resource located elsewhere.
V
VxWorks A real-time operating system for embedded devices by WindRiver Systems. This is
the OS for the JACE-4/5 platform.
W
WAN Wide area network. A group of LANs connected with telephone or data lines to form
one network.
Web Supervisor Refers to a Niagara station running on a PC, which is typically configured as the
supervisor station for any networked JACE controller(s). Typically, this PC is also
running the full suite of Niagara applications, including Java Desktop Environment
and the Alarm Console.
WebUIService Web user interface service. This service is required by a Niagara station to provide a
set of views to its objects when using a Web browser connection. The WebUIService
is a suite of servlets that use HTML and Java applets to provide a browser user
interface (BUI). Servlets included are the GxServlet, ChartServlet, ScheduleServlet,
StatusServlet, AlarmServlet, and TextServlet.
WINS The Windows Internet naming service is Microsoft’s Windows-only name resolution
protocol. Like DNS, WINS is also implemented with a series of servers that maintain
databases of host names to IP addresses. However, setting up WINS is easier than
setting up a DNS because WINS actually receives most address records
automatically from the WINS clients.
wizard A utility within an application that helps you use the application to perform a
particular task. For instance, the New Station wizard guides you through the
configuration of a station node, which makes the process of adding a new station very
simple.