Siemens SIMATIC ET 200PA SMART+ Equipment Manual

A.5 Hardware interrupts [ID:151041008011]
Hardware interrupts
The DI16×24VDC PA generates a hardware interrupt for the following events:
• At a rising edge (signal change from 0 to 1)
• At a falling edge (signal change from 1 to 0)
Interrupt OBs are called automatically if an interrupt occurs.
You can 󹪝nd detailed information on the event in the hardware interrupt organization block
with the "RALRM" instruction (read additional interrupt information).
The module channel that triggered the hardware interrupt is recorded in the start
information of the OB40 in the OB40_POINT_ADDR tag. The 󹪝gure below shows the
assignment to the bits of local data double word 8.
Bit no.
Error event that triggered the hardware interrupt:
2
H
: falling edge
1
H
: rising edge
Channel that triggered the hardware interrupt:
1
H
: Channel 1 of the I/O module
0
H
: Channel 0 of the I/O module
2
H
: Channel 2 of the I/O module
3
H
: Channel 3 of the I/O module
F
H
: Channel 15 of the I/O module
:
W#16#0001
User Structure Identifier (USI)
LB 11
01234567
XX
LB 10
89101112131415
X
LB 9
16
1
LB 8
24
0
31 23
0 0 0 0
XX
X
LD 8
FigureA-4 Start information of the organization block
A.6 Address space [ID:151041039883]
Abbreviations
• "IB" stands for input byte, that is, the module start address in the input area
• "DI" stands for digital input
• "QDIn" stands for the value status (QI) of digital input n
Drivers, parameters, diagnostics messages and address space
A.6Address space
DI 16x24VDC PA
Equipment Manual, 06/2023, A5E51654101-AA 43

Siemens SIMATIC ET 200PA SMART+ Specifications

General

Brand	Siemens
Model	SIMATIC ET 200PA SMART+
Category	I/O Systems
Language	English