Overview
1.7 Options
TP 270, OP 270, MP 270B (WinCC flexible)
1-16 Operating Instructions, Edition 03/2004, 6AV6691-1DD01-0AB0
1.7.2 Software options
1.7.2.1 Internet Explorer
Overview
The Internet Explorer supplied with the HMI device has been specially adapted to the
Windows CE operating system and has a restricted functional scope (Pocket Internet
Explorer). Only simple HTML pages, about 100 kb, can be displayed.
Prior to installation, use the system settings to set 1.5 Mb memory for the DRAM file system.
Caution
If too much memory is provided for the DRAM file system, runtime has too little working
memory available. Therefore, in the case of incorrect settings, there is no guarantee that the
runtime can run properly.
Caution
The operation of runtime together with the Internet Explorer can only be guaranteed when
the run-capable configuration (*.fwx) generated is a maximum of 2 Mb.
The installation of Internet Explorer is performed using the ProSave service tool or WinCC
flexible configuration software.
Files created in Internet Explorer, e.g. Favorites, are stored in the DRAM file system. The
DRAM file system is deleted when the unit is switched off. However, using the system
settings (OP Properties > Persistent Storage > Save Files), it is possible to backup the data
currently available in the DRAM file system to the Flash memory. When the device is started
up, the backup data is automatically restored.
If you remove the Internet Explorer, the files created from Internet Explorer must also be
deleted. To do this, delete the files in the DRAM file system using the standard Explorer.
Then backup the DRAM file system ("OP Properties > Persistent Storage > Save Files").
Reset the size of the DRAM file system to the preset value of 2 Mb.
Note
The initial configuration can be restored simply by updating the operating system.
See also
System (Page 6-15)
Update operating system (Page 7-18)
Transferring options (Page 7-22)
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