inveo mSCADA, Руководство пользователя

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8 Examples
To send and receive data via a web browser, you can use the included ajax.js library or
any other supporting AJAX technology (eg Jquery).
8.1 Connection of 1 device
The following example shows one device assigned to Modbus RTU with physical address 1
and register addresses 4000 and 4001.
Modification of the POINTS.xml file:
< group >
< id > Temperatura_ < /id > //variable name
< id_start > 5 </ id_start > //starting number
< len > 2 </ len > //number of points in the group
< protocol > RTU </ protocol >
< dev_addr > 1 </ dev_addr > //physical address
< cmd > MB_MULTIHOLD </ cmd >
< address > 4000 </ address > //the initial address of registers
< access > rw </ access >
< pool > 50 </ pool >
</ group > //end of the group
Take a look.
Only one group
BUT with two points has been defined in the POINTS.xml file.
Then modify the file in a web directory with the name eg index.htm
< html >
< head >
< meta http - equiv = "content-type" content = "text/html; charset=ISO-8859-2"
>
< title > Przykladowa strona </ title >
< script src = "/ajax.js" type = "text/javascript" ></ script >
</ head >
< body >
< p > Parametr 1 :
< span id = "data1" > ? </ span >
< button id = "btn1" onclick = "setData('Temperatura_5',16,32)"
> Ustaw </ button >
</ p >
< p > Parametr 2 :
< span id = "data2" > ? </ span >
< button id = "btn2" onclick = "setData('Temperatura_6',16,32)"
> Ustaw </ button >
</ p >
< script type = "text/javascript" ><!--
function updateStatus ( xmlData )
{
setTimeout ( "newAJAXCommand('comm.xml', updateStatus, false)" , 500 );
if (! xmlData ) return ;
document.getElementById ( 'data1' ). innerHTML = getXMLValue ( xmlData ,
'Temperatura_5' );
User manual
μSCADA
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[B03]