English Français Nederlands
Wizcon for Windows and Internet
Easy to build web-based SCADA applications
Users can easily build Web-enabled SCADA applications with Wizcon without
knowing HTML or Java. Use the Wizcon Wizard to convert existing Wizcon
applications to HTML pages that include Java applets for image objects,
alarm summaries and online charts. Then publish the HTML files on a favorite
Web server, allowing the user to interact with the application through
the Web.
Using a Java-enabled browser, authorized users can interact with the data from anywhere. Remote users can change a setpoint, toggle an output, control the process behavior through trend charts and sort and acknowledge alarms. Archived alarms and trend charts are also available to remote users. All they need is a standard Web browser and a TCP/IP connection to the Wizcon station either through a corporate network, an Intranet, a router or gateway or a simple direct modem connection (dial-in).
HTML page generating wizard
Creating HTML pages from within Wizcon is simple. To begin, specify parameters
for the Viewers (Applets) that you want to display. Enter a name for the
HTML file and save it in the list. Click on the page to display it in
the browser.
Creating picture viewers
A Picture Viewer displays a graphical representation of a process in a
browser. Users can choose what graphical presentation the Viewer displays
when the HTML page is first opened, by selecting one of the project’s
Picture files.
Since image definition is the most time-consuming task, picture files are automatically generated and saved with a .wnp extension when zones are created in an image. A single picture file is created for every zone defined in an image.
Creating event summary viewers
An Events Summary Viewer features real-time alarm monitoring based on pre-defined
specifications in the Events Summary Profile. Users can create an Events
Summary Viewer by generating an HTML page from an Events Summary Profile
defined with Wizcon, and publishing the resulting page on the Web.
Defining trend viewers
A Trend Viewer displays online past and current activities recorded by
Wizcon according to chart definitions specified in the Trend Profile.
This feature provides additional benefits for remote control applications
and applications where frequent causal access is required. For those applications,
historical display of data is critical. In such applications an operator
may wish to log into his/her application at the end of the day and check
what happened during the day.
The trend features include:
- Historical cache mechanism: Offers improved performance with minimum load on the server.
- Asynchronous historical data download: As a result, the Trend is always responsive to the user.
- Performance: On a local area network, performance is similar to being at the Wizcon station. It is possible to use trends over a dial-up connection.
- Display of multiple tags over time.
- Historical and online data support.
- X and Y axis labeling.
- Different line colors and line types available.
- Online modifications of the X or Y axis and the tags list.
- Trend on bit of tag.
Users can create Trend Viewers by generating an HTML page from a Trend Profile, and publishing the resulting page on the Web.
Creating HTML pages manually
Advanced users can create HTML pages manually and customize them to meet
their needs. The following example shows an HTML code for requesting an
Events Summary applet.
|
<APPLET archive="axeda.zip" CODE="axeda/Events Summary/Events Summary.class" – The name of the Applet. WIDTH=490 Height=200> <Param Name = file VALUE = "first.wna"> - The input file to be displayed by the Applet. <Param Name= filebase VALUE = "first.annprf"> The directory of the file. </APPLET> |
Generating HTML pages manually
Width and Height specify the size in pixels of the Event Summary Applet generated on the HTML page.
Web server
Wizcon for Windows and Internet can be associated with any standard Web
server to instantly publish information to the Web. Wizcon can be smoothly
integrated into the existing Internet/Intranet corporate strategy or can
use standard Windows-based servers for standalone applications.
