Eaton XV300 Series, Руководство пользователя

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not active in and of themselves. They wait until
they are addressed by a client, after which they
perform the corresponding tasks. Each server
application provides its service on the network
via a specific port.
Show System Info
Special function that can be used to show a win-
dow with current system data in GRS
Shutdown
Special function that can be used to exit GRS
Slot
Refers to a slot for a communication module in
the HMI
Source project
The project currently open in GALILEO.
Standard texts
Texts that can be used in a general manner
throughout a project, e.g., titles, button labels,
etc. These texts can consist of several lines.
Start screen
The start screen that appears when the pro-
gram starts on the HMI (device). The start
screen needs to be defined as one of the stand-
ard screens in the project organization struc-
ture for each GALILEO project.
Static Control
An element (objects and tools such as lines,
circles, rectangles, images, text, etc.) that does
not change while the HMI is running.
Status bar
The status bar is located at the bottom of the
program window. It is used to show whether
the editing mode is in "overwrite" or "insert"
mode, etc. In addition to the standard inform-
ation shown by Windows, the currently selec-
ted text number will also be shown.
Status Data Block
Together with the control data block, the status
data block is used to monitor and display the
status of data transfers between the HMI and
PLC.
Stroke
A hub is a device used to connect various net-
work devices together. Hubs broadcast all data
to all connected devices (devices connected
with a patch cable).
Subnet mask
A subnet mask is an IP address "filter." It has
the same syntax as an IP address. This mask
defines which computers can transfer data
between themselves within a network. This
also means that subnet masks define the max-
imum size of the corresponding subnetworks.
Supply voltage
Switch
Switches are networking devices that are more
advanced than hubs. One of the main features
that sets them apart from the latter is the fact
that they are more "intelligent" and forward data
packets much more efficiently by sending them
only to the devices that need to receive them.
Multiple data packets can pass through a
switch at the same time. Among other things,
this means that switches have a significantly
higher total bandwidth (throughput) than hubs.
Moreover, switches learn which stations are
connected to which ports, meaning that addi-
tional data transfers will not result in any ports
being subjected to unnecessary loads, i.e., that
data will only be forwarded to the port con-
nected to the intended destination. With the
exception of their higher price, switches are
superior to hubs in every way.
System character set
Font type and size used to output system mes-
sages.
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