Siemens SIMATIC PANEL PC 877 - Manual (Page 250)

Detailed descriptions
17.6 BIOS setup
SIMATIC Panel PC 877
17-58
Operating instructions, Release 07/2006, A5E00877780-01
"PCI IRQ channels" field
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Figure 17-15 The PCI IRQ channel field
Disabled No interrupt possible for the selected PCI IRQ channel
AutoSelect Plug and Play mechanism in BIOS selects unassigned interrupts and allocates them
to the on-board PCI devices.
3 to 15 The selected PCI IRQ channel is assigned permanently to the selected interrupt. You
should only select this setting if this is specified in the documentation for your
application.
Assignment of the PCI IRQ channels to the PCI slots.
Box PC 840 PCI modules interrupt assignment (PCI IRQ) in:
Module interrupt
(Pin No.)
Slot 1 Slot 2 Slot 3 Slot 4
INT - A (A6) channel 1 channel 2 channel 3 channel 4
INT - B (B7) channel 2 channel 3 channel 4 channel 1
INT - C (A7) channel 3 channel 4 channel 1 channel 2
INT - D (B8) channel 4 channel 1 channel 2 channel 3
Bold letters indicate the master interrupt of the slot module