Siemens SIMATIC IPC827D - Page 141

Technical specifications
8.5 Hardware descriptions
SIMATIC IPC627D/827D
Operating Instructions, 09/2014, A5E32990859-AB
141
Interrupt assignment of the slot connectors on the bus board
1
Host PCI-IRQ A to H will be assigned IRQ 16 to 23 permanently in ACPI mode. Host PCI-IRQ A to H will be automati-
cally assigned IRQ 0 to 15 in PIC mode. A specific assignment can not be enforced.
Y
Interrupt in APIC mode
Z
BIOS Default Interrupt in PIC mode (e.g. DOS)
Exclusive PCI hardware interrupt
Applications demanding a high-performance interrupt require a high-speed hardware
interrupt reaction. The PCI hardware interrupt should be used only by one resource in order
to ensure high-speed reaction of the hardware.
Exclusive interrupt in APIC mode
IRQ assignments for Windows systems, (APIC mode)
Ethernet 1
16
1, 2
Ethernet 2
17
1
Profibus/MPI
19
1
PCI slot 1 20
1
PCI slot 2
21
1
PCI Express slot
16
1, 3
1)
Requirement: The modules in the PCI slots each require only one interrupt
2)
Requirement: VGA and PCIexpress do not require an interrupt
3)
Requirement: VGA does not require an interrupt and Ethernet1 is disabled