FAQs – Networking

How can I define IP Addresses when browsing for network nodes?
Modify the file NetworkNodes.txt in the directory C:Program Files (x86)Open Automation SoftwareOPC Systems.NET with Notepad or a text editor.
How can I change the default WCF Port Number to use in the OAS Service and Client applications?
Go to Configure-Options Networking and set the WCF Port Number. View the following video for adjusting the client applications and how to adjust WCF port number in the realtime service and all client applications: [videopop id="hzdyr2bj4eo"]
How can I host my OAS Service on the Internet without a fixed IP Address or registered domain name?
Use the Live Data Cloud feature that is free to use. How to host data from any Windows PC with a standard Internet connection.  No fixed IP Address or registered domain name required. [videopop id="VL_WVlbuhuQ"]
Do I need to make a web application in order to access data over the Internet?
No, all Open Automation Software client applications and services support Internet communications in Open Automation Software by default. You can deploy them as Smart Clients.
When trying to connect to a local or remote OAS Service an error occurs and access is denied.
View the Remove OAS Service Access section is this file.
When I select localhost I receive an error
Try 127.0.0.1.  If it works you can correct your hosts file where is shows localhost.
Data packet size is limited on Windows XP and Windows Server 2003 for UDP Broadcasts
If you setup a large number of tags to be transferred via UDP Broadcast sent from or received on XP or Windows Server 2003 and the data is not transferred, but is with a small number of tags download and install the following Hotfix. https://support.microsoft.com/en-us/kb/824838