Siemens SIMATIC HMI OP37/Pro, Руководство по эксплуатации оборудования, Страница: 44 / 74

5-8
OP37/Pro Equipment Manual
Release 7/98
5.3 Interrupt Assignment
The interrupt assignment is listed in the table below.
This information is required primarily in order to prevent conflicts between
modules (e.g. caused by using the same hardware interrupt) when using addi-
tional modules.
The 16 hardware interrupts (IRQ 0 through IRQ 15) are processed on the
OP37/Pro by two type 82C59 integrated interrupt controller.
The INT output of the slave controller is connected to the IRQ 2 input of the
master controller.
Table 5-1 I/O addresses of interrupt controllers
List of Hardware Interrupts Parameterized
Interrupt Vector,
Memory Address
NMI RAM parity; I/O channel parity INT 2
H
IRQ 0 Timer output 0, internal peripheral-device controller
(ISP) INT 8
H
IRQ1 Keyboard (output buffer full) INT 9
H
IRQ 2 Interrupt of slave interrupt controller INT A
H
IRQ 3
*)
Serial interface (COM 2) INT B
H
IRQ 4
*)
V.24/V.28 interface, serial interface (COM 1) INT C
H
IRQ 5
*)
ASPC2 INT D
H
IRQ 6
*)
Floppy controller INT E
H
IRQ 7
*)
Parallel printer interface 1 (LPT) INT F
H
IRQ 8
*)
Real-time clock (RTC) low active INT 70
H
IRQ 9
*)
User-assignable INT 71
H
IRQ 10
*)
User-assignable INT 72
H
IRQ 11
*)
User-assignable INT 73
H
IRQ 12
*)
PS2 mouse INT 74
H
IRQ 13 Maths processor INT 75
H
IRQ 14
*)
Hard disk controller; IDE interface INT 76
H
IRQ 15
*)
User-assignable INT 77
H
*
These signals are fed to the I/O connectors and can be assigned to the PCMCIA interface.
Installing Expansion Modules and Optional Equipment