Under the path /visu/ all elements of the visualization are accessible. The elements are checked for authorization, as you would do in the normal visualization.
Note: If a variable is not used on the visualization, it cannot be read or written to.
It is possible to output and describe all variables of the
visualization, declared in the function blocks VISU, VISUVAR etc. The path for this is defined as /visu/var/. Followed by the elements that are to be output. These can be declared separated by commas.
/visu/var/n2a,n1a
Certain values can be read by expanding the URI with the values.
/visu/var/n2a,n1a/switch,statustext
To describe a value, this can be written with the input set:variable=value. If successful, the variable will be changed accordingly in all elements and returned. In addition, an event is displayed in the visualization monitor.
Note: The value NULL cannot be set.