Here’s what more than 2,500 business decision-makers around the world say.Download the report
...with the Facility Hero app in hand! Discover how you can optimize your maintenance efforts today.Learn more
Access tailored services, 24/7 self-service and expert help. Anywhere, anytime, any project.Discover now
Everything you need to know about our IoT technology backbone.Learn more
Schneider Electric Global Website×
Explore our global offerings or select your country from one of our five regions.Global
Découvrez nos offres globales ou sélectionnez votre pays dans l’une de nos cinq régions.
Goals and Symptoms
The following error message appears in PowerLogic SCADA (PLS) v7.10 after starting Runtime:
Cannot Open Server <ServerName>. The port is in use or an attempt was made to access a socket in a way forbidden by its access permissions.
As a result, the IO Server will not start.
Causes and Fixes
The default port used by the I/O Server is 2078. The above issue can be resolved by assigning a different port to the IO Server in the Servers > I/O Server field in the Project Editor.
For a complete list of default ports used in PLS, refer to the System Integrator Manual (search for 'default port'). Here are a few:
2075 Reports server communications
2076 Alarm server communications
2077 Trends server communications
2078 Legacy I/O communications
2082 Publish subscribe I/O server communications
To determine which ports are already in use, open a Command Prompt window and run the command 'netstat -a'. This will list all of the TCP port numbers currently in use in the system.
For additional information, refer to RESL197082.
Keywords: PLSCADA, PL SCADA, PowerSCADA, Power SCADA, StruxureWare PowerSCADA Expert, SPE 7.1, 7.2, 7.10, 7.20, net stat