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Siemens SIMATIC PANEL PC 877 User Manual

Page 242

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Detailed descriptions

17.6 BIOS setup

SIMATIC Panel PC 877

17-50

Operating instructions, Release 07/2006, A5E00877780-01

Entry

Meaning

On-chip USB A [Enabled]

On-chip USB A determines the function of USB ports 0 and 1. On-

chip USB A occupies PCI IRQ Channel 1. On-chip USB A port 0 is

located on the front interface socket X44, port 1 on the bottom of the

device rear X36. Users cannot edit this value.

[Enabled]

On-chip USB B determines the function of USB ports 2 and 3. On-

chip USB B occupies PCI IRQ Channel 2. On-chip USB B port 3 is

located on internal X2033. Port 2 is located on the bottom of the

device rear X36.

OnChip USB B

[Disabled]

The interface is disabled, resources are released and can be used

otherwise.

[Enabled]

On-chip USB C occupies PCI IRQ channel 3. On-chip USB C Port 5

is located at the front interface socket X2034.

On-chip USB C

[Disabled]

The interface is disabled, resources are released and can be used

otherwise.

[Enabled]

USB 2.0 is enabled for ports 0 to 5. OnChip USB 2.0 is allocated to

PCI IRQ channel 4.
Accessible are only the the USB ports 1 and 2 on the top/bottom of

the rear panel of the device, or USB 5 on the front panel.

On-chip USB

2.0

[Disabled]

The USB interfaces on port 0 to 5 support only USB 1.1 and occupy

resources as described earlier.