Appendix; Frequently Asked Questions About Codesys Web Visualization - WAGO -I/O-SYSTEM 750 User Manual

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Appendix

19.1 Frequently Asked Questions About CoDeSys Web
Visualization
How can I optimize the applet for special screen resolutions?
In order to optimize the Web visualization for a PDA or a touch panel with a fixed
resolution, you should proceed as follows:
In the "Target system settings", enter the pixel width and height in the tab
"Visualization". When the visualization is created, the visible area is highlighted
in grey. However, the actual pixel width and height of the Web visualization is
defined by the attributes "Height" and "Width" of the HTML APPLET tag in the
"webvisu.htm" file. Do not forget to also adapt these parameters to the existing
resolution.
Which JRE should I use?
It is recommended that you use Java2 standard edition Version 1.5.0
(J2SE1.5.0_06) or higher. This is available free of charge at www.sun.com.
Microsoft's MSJVM3810 was also tested. Furthermore, for PDAs there are
runtime environments available from other manufacturers (JamaicaVM, CrEme,
etc.). To be considered is that for the Web visualization, these solutions can
behave differently with respect to their scope of services (e.g. stability) than those
mentioned above.
Should the Java Cache be used?
Neither yes nor no. After a standard installation the cache is enabled. If the cache
is enabled, the JRE uses it to store applets and Java archives. If the Web
visualization is called up a second time, it requires considerably less time to start
because the applet (approx. 250 kb) does not need to be reloaded via the network,
but is already available in the cache. This is especially interesting when network
connections are slow.
Note:
The Java archives may not be transferred into the cache completely due to
network failures. In this case, the cache must be cleared manually or be disabled.
WAGO I/O-SYSTEM 750
I/O-IPC-C10E, CANopen Master
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