Is it possible to put an external link to the Fidelix Visio?

It is possible, but the action is limited. If another access interface uses the HTTP protocol a "sub-station" connection can be established. Create a "substation" with the parameters:

It is possible, but the action is limited.
If another access interface uses the HTTP protocol, a "substation" connection can be established over standard IP port 80.
Create a "substation" with following parameters:
If external interface can be opened in the browser, the landing page will display an "Go to the substation" link, but "connection missing" message will be displayed:
This could not be removed because Visio communicates with the FX substation over IP port 1235 and reads number of active alarms.