How to use Web access and HMI unified comfort panel async?

Hello,

I am having problems with the Web access function on the HMI unified comfort panel.

I have designed a motor control screen and turned it on as a popup.

When I open the popup screen on the Web Browser, the Popup screen on the HMI automatically changes the values of the tags. This is dangerous if 2 people control 2 devices at the same time.

I don't know how to only allow control on the web browser or HMI at a time.

If you have any ideas please give me a suggestion.

Thank you very much.

Stefan Arcularius

Hi ducna,

Unfortunately, there is no built-in mechanism to get information about the number of connected clients.

I have seen solutions where a script in the OnLoaded event of the main screen uses the @LocalMachineName system tag to get a unique ID and adds this information to a global tag. However, adding information about a connected client is easier than deleting information about an unused connection. This requires an algorithm to verify the connection. This can be done by cyclically incrementing a tag in a dynamization script and checking the changes in a scheduled task.

Kind regards
Stefan

 Hi mr. Stefan,

Thank you for your suggestion.

I think I will send a recommendation to users..