14 Important Notes
WAGO PERSPECTO® 762
762-1057 WP 57 QVGA
Manual
Version 1.4.1
Response time depends on the number, type and form of the objects
displayed
This device has been designed for presentation of simple CODESYS Web
visualizations. The device establishes communication with a controller (e.g. from
the series 750-88x or 758-8xx) and displays the visualization pages stored there.
Due to the limitations of the technologies used, the following points should be
observed:
The response time depends on the number, type and form of the objects
displayed. The fewer the objects displayed per page, the faster the device
responds.
More time is required the first time a visualization page is called up than
subsequent calls.
There is a delay the first time a visualization page is displayed because it is first
fully compiled in the working memory.
Should it take more than 1 second to compile, a message appears with the text
"Loading ..." to indicate that background activity is underway. When switching to
another visualization page, a copy of the page remains in the cache and
subsequent calls of the page are much faster. Because the size of the cache is
limited, it may not always be possible to store all pages in memory entirely
depending on the application. As a result, you may experience delays later when
calling up the same page.
2.3.1
Description of the Function "CookieHandling()"
The use of this Java Script function results in a continuous memory consumption
on the Web panel.
The last set language for dynamic texts is stored by this mechanism and is
automatically reset at the next call-up of the Web visualization.
This function is not possible on the Web panels. The response corresponds with
that of an Internet browser that does not accept cookies.
