DataHub Web Server

You have successfully configured the DataHub to run as a web server. The following examples will show you some of the capabilities of the DataHub's web support.

Please start the DataPid program to see live data.

Name	Value		Quality	Time Stamp
Setpoint	undefined	undefined	undefined	undefined
Process Variable	undefined	undefined	undefined	undefined
Output Variable	undefined	undefined	undefined	undefined
Update Frequency	undefined	undefined	undefined	undefined
Setpoint Auto/Manual	undefined	undefined	undefined	undefined

Web Server Demo Pages

Java Applets

Java - Trend and Gauge Example.
Java - PID Faceplate Example.

Trend applet.
Gauge applet.
Table applet.
Slider/Progress Bar applets.
Entry Field/Spinner applets.
Label/Radio Group applets.

AJAX

Streaming AJAX - DataHub Browser View.
Streaming AJAX - DataHub Table View.
Streaming AJAX - High speed, low overhead.
Streaming AJAX - Simple code example.
Polling AJAX - Low speed alternative.
Polling AJAX - Simple code example.

ASP

ASP - DataHub Web Reports.
ASP - Simple code example.

Compare Java, AJAX and ASP

Want to know which web technology is best for your application? Click here for a comparison chart that explains the benefits and drawbacks associated with each type of web display.

Links to Documentation

OPC to Web
Web Programming with Java

For more information please visit our web site at www.opcdatahub.com or www.cogent.ca