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7.4. MSS ASTRA-PRO INSTALLATON OPTIONS
7.4.1. MSS Astra-Pro can be installed and used in a variety of ways:

On one PC with SQL Server installed.

In a local computer network with SQL Server and MSS modules distributed among
several computers.

For system remote setting and monitoring through the Internet provided Astra-LAN
module is installed inside the Control Panel and static IP address is assigned.
7.4.2. We recommend using USB connection of the panel to PC only for initial system
configuration, but not for system monitoring.
For the continuous monitoring should be used:
additional RS-485 ports provided:

Astra-RS-485 module is installed,

None of hard-wired devices is registered on selected RS-485 port,

Astra-984 adapter is used for physical connection (not included)
LAN-port provided:

Astra-LAN module is installed (not included),

EIA/TIA 568B crossed-type patch cord is used for connection to the closest
router or PC network card.
For connection diagram refer to Paragraph 6 of this guide.
In the tab of the System Control task the MSS communication ports must be specified.
The longer RS-485 interface lenght is used, the lower data exchange rate must be
selected.
When more than one port is used for monitoring, the highest priority has the highest one
from the list. For example, USB is more priority than RS-485; RS-485 in its turn is more
priority than Socket B RS-485; etc. When connection is lost, the most priority port of the
remaining ones is activated.
Warning! Please, take into account that switching from one communication port to
another one takes time, sometimes about one minute.