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Browser Based Applications Developed With
The OPC Web Client Web Service
Introduction
This particular system consists of a Web Server which hosts the OPC Web Client Web Service, and the browser software which consumes it. The OPC
Web Client software is installed at the Web Server ONLY, no software is needed by the browser.
Deployment Options/Needs
Essentially, the following software and components will need to be deployed to the Web Server that is hosting the OPC Web Client Web Service:
- The OPC Web Client itself
- OPC Web Client Web Service
- 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 will need to configure DCOM on the web-server. If your OPC Server is on a remote computer (a different PC to the web-server) then you will
need to verify/configure its DCOM too.
Once the OPC Web Client, the OPC Web Client Web Service 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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