Evco RICS 4.30, Руководство пользователя

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78 RICS
Remote supervision
14.2.1.1 Page refresh
The refresh of information on each page is automatic depending on certain criteria. Normally information is refreshed
every 30 seconds – 1 minute, up to a maximum of 2 minutes when it is assumed that the data values do not change very
often.
Refresh cannot occur more frequently as this would make navigation very slow indeed, and may lead to the saturation of
slower connections.
If you want an immediate refresh, in some sections you can click on the refresh icon in the bottom-left corner under the
text that shows when the latest data was received (see Screenshots 14.1 and 14.2).
This consideration regarding refresh times must also be remembered when you change a device parameter, in so far as
the new value given will not be displayed on the screen immediately but only after the refresh of the page itself.
In the event of data input the web-pages use a technique that requests a more frequent refresh than that used during
simple navigation.
14.3 RICS Client/Server
RICS allows the supervision of a remote plant comprising EVCO devices with a particular configuration called RICS
client/server. In order to do this you will need a PC upon which RICS is installed as server and at least one PC where
RICS is installed as client.
RICS server is the software that directly manages the EVCO device network (i.e. reads data, saves it, manages any
messaging services such as e-mail, sms text messages, fax), with the configuration of a PC-IFC29 device network.
Moreover it can accept connections coming from RICS clients that can interact with the plant managed by the server
using an interface that is similar to that on the server itself. A client station can:
• Display the status of a remote plant
• Read/write parameters on any remote device
• Perform a file download of files in the remote system (settings, history, etc…) or transfer files from the client system
to the server (updates).
Client/server communication can occur on three different channels:
• Direct modem call: in this case there can be only one active client using this sort of communication; the client must
know the telephone number of the server (the RICS server operating system must be Windows XP Professional or
better)
• Via company network or LAN: in this case the server can be reached by the client using an IP address or the name of
the server host within the company network
• Via Internet: in this case the server can only be reached if it has a static IP address that identifies it in Internet.
In addition to this type of remote management that requires an RICS server and an RICS client, you can also access the
server with commercial software (such as PC Anywhere) or, with the Remote Desktop service in Windows if you have
Windows XP Professional on the server. As regards this latter service you are referred to Microsoft documentation for
further information. The software that must be installed on the client to use the Remote Desktop service can be downloaded
from: http://www. microsoft.com/Windowsxp/pro/downloads/rdclientdl.asp.