Siemens SIMATIC ET 200SP HA Manual - Halaman 46

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Drivers, parameters, diagnostics messages and address space

A.5

Hardware interrupts

The DI 16×24VDC HA 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.

The module channel that triggered the hardware interrupt is recorded in the start information

of the OB40 in the OB40_POINT_ADDR tag. The figure below shows the assignment to the

bits of local data double word 8.

Figure A-4

Start information of the organization block

Digital Input Module DI 16xNAMUR HA (6DL1131-6TH00-0PH1)

Manual, 11/2017, A5E39293880-AB