-
9
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When the
DREAM 2
application starts running, a few activities start in parallel:
The
LCD display
connected to the
CPU board
will start showing some
introductory screens until arriving to the
Main Menu
.
The
CPU
starts scanning all the I
nterfaces
second by second, sending them
the required status of the outputs receiving back the status of the inputs.
This activity is indicated by blinking of the
REMOTE I/O
communication
LEDs on the
CPU Board
and on each of the
Interfaces
.
Right after starting up the
DREAM 2
application, the controller starts looking
for its host server on the Internet, in order to login to the service.
1.5
The concept of the internet communication
The
DREAM 2
has 3 options for accessing the internet:
Using a
Cellular Modem
supplied by Talgil and plugged into the CPU board.
Using an
Ethernet card
for connecting to a
L
ocal
A
rea
N
etwork.
Using a
USB Netstick
plugged into the motherboard.
The controllers after power up use their internet link to login to the service and stay
online.
As mentioned above, users have two options for accessing the system: one option is
the software package called
CONSOLE
and the other is the internet site called
SPOT
.
Both options enable the users to login to the
SERVICE
which will coordinate
between users and their controllers. Additionally the
SERVICE
contains a large
DATA BASE
that stores all the information about all the controllers and the
ADMINISTRATION
software that decides about who is permitted to access which
controller.
The
Server
will interrogate all the online controllers repeatedly in order to keep the
DATA BASE
up to date, so that users interested in some information about some
controllers, can find it in the
DATA BASE
.
USB Netstick
