Issue
- WebStation connection is unreliable when using a 4G (cellular) connection
- Auto logoff times are not obeyed
Product Line
EcoStruxure Building Operation
Environment
- Building Operation WebStation 3.x
- Broadband Cellular Networks
Cause
WebStation creates a subscription with the Building Operation server, so it will attempt to connect every 10 seconds. If this connection is removed/interrupted/ or no longer required for a period of 60 seconds, WebStation will force itself to log out. This setting is currently fixed and cannot be adjusted.
Currently, there have been instances where this connectivity issue is seen when using, as shown below, a device with a broadband cellular connection attempting to connect to a Building Operation server that also connected to the same/similar cellular network this is the most common scenario where this issue is seen.
Resolution
It is recommended not to use these cellular network connections to permanently display Building Operation Server information, especially from mobile devices connecting to the cellular network. This type of connection should be used sparingly and for quick access to view/check information as necessary. Connection loss can be expected if you move away from the webpage for more than 60 seconds. Any lengthy connections to the Building Operation Server are recommended to use a more permanent network connection.
Issues have not been seen when using broadband Internet or a similar connection as shown below to a remote cellular Building Operation Server. This meaning that the EcoStruxure Building Operation system has remote Internet access via a broadband cellular connection.
To troubleshoot this further, capture a HAR file using the details provided here How to collect a network trace | Microsoft Docs and reproduce the issue while this debugging window is open within your browser. Note: This capture must be done at the source; that is where WebStation is running. This may not be easy to do using a mobile device.
Send this saved HAR file and the Internet browser version and EBO version used along with connection types to your local support channel.
