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IPL M PDP-ES • Glossary
IPL M PDP-ES • Glossary
Glossary
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devices you have and your current list of IP addresses. With
this information, GVC creates a GV for your specific devices.
The GVC also compiles the event scripts and loads the GV and
event scripts onto the box. When using the GVC, the user must
specify the port number for each device (for attached devices to
be controlled, they must be on that port). In order for multiple
IP-link boxes to appear in the same GV, all the boxes must be
configured at the same time, using the GVC.
Global Viewer (GV) is a Web application that is loaded into the
memory of an IPL unit. These pages provide an interface for
control of devices attached to the IPL product. They
communicate with the event scripts running on the unit, and the
event scripts issue the commands and queries. This
communication between the Web pages and the event scripts
occurs through predetermined memory locations in the IPL
unit.
HTTP (HyperText Transfer Protocol) is a Web protocol based
on TCP/IP, that is used to fetch HyperText objects from remote
Web pages.
Internet Protocol (IP) is the protocol or standard used to send
information from one computer to another on the Internet.
IP address is a unique, 32-bit binary number (12 digit decimal
number, xxx.xxx.xxx.xxx) that identifies each sender and each
receiver of information connected to a LAN, WAN, or the
Internet. IP addresses can be static (see Static IP) or dynamic
(see DHCP).
IP Netmask is a 32-bit binary number (12 digit decimal number,
xxx.xxx.xxx.xxx) used on subnets (smaller, local networks) to
help the router determine which network traffic gets routed
internally to local computers and which network traffic goes out
on the Internet.
Media Access Control (MAC) Address is a unique hardware
number given to devices that connect to the Internet. When
your computer or networking device (router, hub, interface, etc.)
is connected to the Internet, a table (see ARP) relates the
device’s IP address to its corresponding physical (MAC)
address on the LAN.
Pass-through allows control systems to work with the IPL and
provides a link between two ports.
Ping is a utility that tests network connections. It is used to
determine if the host has an operating connection and is able to
exchange information with another host.
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GLOSSARY
10/100Base-T is Ethernet that uses Unshielded Twisted Pair
(UTP - Cat 5, etc.) cable, in which the amount of data
transmitted between two points in a given amount of time is
equal to either 10 Mbps or 100 Mbps.
Address Resolution Protocol (ARP) is a protocol that assigns an
IP address to a device based on the device’s MAC or physical
machine address.
Custom Web-page is any file that can be loaded into an IPL box
and served by the IPL’s internal Web-server. A custom Web
page can provide control of devices attached to the IPL without
use of the Global Viewer (GV) or Global Viewer Configurator
(GVC). This is true with or without an accompanying event
script. Any number and size of graphics can be used, but if they
are too large to fit on the IPL, you can write your Web page so
that they can be served from another Web server. If you install
Microsoft Internet Information Services (IIS) on your desktop,
you can serve any page on its hard disk. The IPL functions like
a little computer with a Web-server—you can use it for various
Web tasks.
DHCP (Dynamic Host Configuration Protocol) is a
standardized communications protocol that enables network
administrators to locally and automatically manage the
assignment of IP addresses in an organization’s network.
Driver is a Global Viewer Configurator (GVC) compatible
package. It includes the event script that controls devices.
Ethernet is a network protocol that uses MAC addresses instead
of IP addresses to exchange data between computers. Using
ARP (see above) with TCP/IP support, Ethernet devices can be
connected to the Internet. An Ethernet LAN typically uses
unshielded twisted pair (UTP) wires. Ethernet systems
currently provide transmission speeds of 10 Mbps or 100 Mbps.
Event script is a program that runs on an IPL box and issues
queries and commands to the attached devices. As long as
event scripts are turned on, event scripts run continuously on
the box.
Global Viewer Configurator (GVC) is a Windows-based
program that, based on user input, creates a Global Viewer
(GV). The GVC requests system information such as which