Touch Panel Standard Line
Visualization 191
762-4xxx TP 600
Manual
Version 1.3.0
•
Manual control: A specific value is set using two capacitive buttons on the
front. The value range is 0 … 255. Pressing the “little sun” button makes
the display 10 points darker; pressing the “large sun” butto
n makes the
display 10 points brighter.
9.5
Application Notes for Web Visualizations
The panels are equipped with a powerful Cortex A9 processor. Delays may occur
when switching between Web pages due to the Web technology. These depend
on the complexity of the page, since the data must first be loaded into RAM and
saved temporarily.
To keep the complexity as low as possible and the associated delay as short as
possible, we have compiled the following tips/application notes for you.
9.5.1
Response Time
The panel was designed for presentation of simple to medium-sized Web
visualizations. For this purpose, the panel builds up the connection to a controller
and displays the visualization pages stored there.
Due to the properties given by the technologies used, the following points should
be considered:
The response time depends on the number, type and characteristics of the
objects displayed. The smaller the number of objects displayed per page, the
faster the panel responds.
Since a visualization page is first fully constructed in the random access memory
before being displayed, there is a delay in displaying the page for the first time
after it is called up.
When changing the visualization page, a copy of the page remains in the cache
memory, allowing the paged to be displayed significantly faster the next time it is
called up.
Because the size of the cache memory is limited, not all pages can be
maintained in the memory depending on the application. As a result, there can be
some delay again in the course of time when switching the visualization pages.
The response time also depends on the mode of transmission selected: not
encrypted http or encrypted https. See also section “Commissioning” >
“Configuring in the Web-Based Management (WBM)” > “WBM Page ‘Ports and
Services>Network Services’”. The bug-proof https encryption is achieved by an
additional layer between http and TCP, which happens at the expense of the
transmission speed and display speed.
9.5.2
e!RUNTIME
Web Visualizations
9.5.2.1 e!COCKPIT Version
Use
e!
COCKPIT
Version 1.5 or higher to exploit the full functional and
performance scope of the panel.
