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Browser Based Applications Developed With
The OPC Web Client ActiveX Controls
Introduction
This particular system dictates that all of the software is actually installed on a desktop computer/end-user system.
Deployment Options/Needs
Essentially, the following software and components will need to be deployed:
- The OPC Web Client itself
- The OPC Common files
- OPCEnum.exe
- OPCProxy.dll
- opccomn_ps.dll
Instructions
By far the quickest and easiest way to deploy your application to a new web-server is to simply run our install-set to install the OPC Web Client
software. This install-set will install the OPC Web Client, along with the OPC Common files.
Once these common files are installed and registered on the web-server, you will of course need to make
sure that the OPC Web Client is licensed. If the OPC Web Client is not registered, then it will operate in a demo mode.
You may need to verify/adjust the internet explorer Security settings to allow your application to run. It is recommended that you add your
"domain" or "local computer" to the "Trusted Sites" section within the Internet Explorer Security settings:
You will need to configure DCOM on the new computer.
Once the OPC Web Client and the OPC Common files have been installed and licensed, and
when the DCOM configuration has been configured, then you are ready to begin testing your deployed application
Deployment Testing
Deployment is only as good as your testing!
Be sure to have a test-plan, or in this case a test web-page that you can quickly run and verify that all the functionality your application needs are in working order! You can of course save time and install & use our examples as part of your tests.
No other point or comment is as important as this...
Code defensively, look for errors and provide a means to log and display those errors at every opportunity - ESPECIALLY on your test page.
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