Web redundancy

Web redundancy monitors the availability of the Power Operation web server and provides notifications about the redundant server if there is a network issue or if the web pages are not available. Within a redundant system, you can enable data sharing with web applications.

Configuring a redundant Power Operation system to share data with the web

You can set up a redundant Power Operation system to enable data sharing with web applications, such as Diagrams, Alarms, and the Status tool.

To configure a redundant Power Operation system to share data with the web, do the following on all servers:

  1. Navigate to ..\Program Files (x86)\Schneider Electric\Power Operation\v [version #]\Applications\Services\Platform Server.
  2. Open the Platform Server appsettings.json file.
  3. Configure the WebServices properties by entering, in priority order, the server name and port numbers to the localhost. For example:

You must perform certificate management on both servers in a redundant system according to whether you are using self-signed or third-party certificates. For more information, see Managing certificates.

Setting up and testing a redundant web server to enable notifications

Web redundancy monitors the availability of the Power Operation web server and provides notifications about the redundant server if there is a network issue or if the web pages are not available. If the primary server is not available during operation of Power Operation WebHMI, a notification will open from the browser. See the following procedure for details on allowing notifications:

To set up and test a redundant web server:

Use this procedure to configure a redundant secondary web server for failover, allowing browser notifications, and test that it is working.

  1. Open Power Operation.

    Example path: https://[localhost]/WebHmi/Login.

  2. Select SETTINGS tab > Web Redundancy.
  3. Enter the IP address for the secondary Power Operation server in the Secondary IP text box:

  4. Turn on the Enable Notification toggle. This allows the web browser to display notifications.
  5. Click Save.
  6. Refresh the web browser.
  7. Close Power Operation WebHMI.
  8. Clear your web browser history and browsing data.
  9. Reopen Power Operation WebHMI.

    If the IIS server is running on a virtual machine, stop it from the left Connections pane in your operating system. Then close and reopen Power Operation.

Notifications are not available in the following scenarios:

  • Browsing the pages for the first time.
  • After clearing the browsing history.
  • Navigating between TGML diagrams and menu items.

For these scenarios, return to the website using the primary network server to receive notifications.