| dc.description.abstract | Nowdays, has been widely circulated various types and models of digital
electrical measuring instrument that can be controlled and monitored remotely using
a serial connection, parallel, or even TCP / IP. One is the gauge Lovato DMK series
32 can get the amount of electrical quantities such as power voltage, phase and
others and transmit the data obtained to the RS-485 port.
In this paper, the PC – DMK connection is transformed form RS-485 to TCP /
IP which are more flexible and more easily converted, and processed on the
computer side, the process is handled by a multi-client server socket program based
on PHP langguange. Socket server is considered connected DMK and all users as a
client, sends repeated queries to the DMK to ask for the results of the measurement
that shipped the data on format that is recognized by device in RTU modbus. The
results obtained for a single query sent by iterating through the connected client in
the form of RAW TCP / IP String data so that all clients can get the same
measurement results, and then save the results into a database.
Client connect to the server use webbrowser based dmkwatcher application
that support TCP / IP socket connection, then process obtained string packet data
and then represented in various forms such as tables, line charts, gauges and so on,
in this paper, the client application is also equipped featured viewer log data. | en_US |
