Siemens Simatic PC Panel PC 870 Manuel de service télécharger pdf (Page 29)

11/01 Notes on the Panel PC 670/870

SIMATIC Panel PC 670/870 Commissioning Instructions 2–9

A5E00135748-01

Special features

The Panel PC 670/870 is shipped with BIOS setting LEGACY SUPPORT

DISABLED. This means the full functional range of a USB keyboard is not available

during the initial boot sequence (before Windows is started). There are no

restrictions for using a USB keyboard to make changes in the BIOS Setup. When

using a touch panel, changes can only be made to the BIOS using an externally

connected USB or PS/2 keyboard.

Notice

If Legacy Support is disabled in the BIOS, problems may occur with ISA/PCI

extension boards.

The USB Legacy Support is preset to DISABLED in the BIOS Setup under

menu item

Hardware.

The Windows NT 4.0 USB driver extension for use of the integrated membrane

keyboard, mouse, and touchscreen has already been pre-installed.

Selection of an operating menu when starting Windows NT 4.0 is only possible with

an external PS/2 keyboard or by changing the BIOS option

USB Legacy

Support

to ENABLED.

Power management

The default Power Saving setting Disabled must not be changed in the BIOS

setup.

Restrictions

Only applicable to Panel PC 670/870 with keyboard front panels:

• The LEDs on an externally connected PS/2 keyboard have no function.

• The LEDs in the integrated function keys are not supported with

Windows NT 4.0.

• No keyboard code tables can be loaded.

• The brightness of the back-lighting cannot be altered.

• Only external USB keyboards without integrated HUB or standard USB mice

(without special, additional functionality, e.g. scroll wheel) are approved for

connection to the front side USB interface and the USB interface on the

computer.

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Siemens Simatic PC Panel PC 870 Manuel de service Page 29