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Siemens Simatic S7-400 User Manual

Page 525

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Interface Submodules

13-29

S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07

Selection Register Rising Edge

Tables 13-32 and 13-33 give an overview of the selection register for interrupt
generation at a rising edge of a digital input.

Table 13-32

Offset Address for the Selection Register Rising Edge (IF 961-DIO)

Offset

Address

Function

Remarks

5

Selection register rising edge

Read/write

Table 13-33

Meaning of the Bits in the Selection Register Rising Edge (IF 961-DIO)

Bit

Function

= 0

= 1

2

0

Interrupt generation at rising edge of the
digital input channel 0

Disabled

Enabled

:

:

:

:

2

7

Interrupt generation at rising edge of the
digital input channel 7

Disabled

Enabled

Selection Register Falling Edge

Tables 13-34 and 13-35 give an overview of the selection register for interrupt
generation at a falling edge of a digital input.

Table 13-34

Offset Address for the Selection Register Falling Edge (IF 961-DIO)

Offset Address

Function

Remarks

6

Selection register falling edge

Read/write

Table 13-35

Meaning of the Bits in the Selection Register Falling Edge (IF 961-DIO)

Bit

Function

= 0

= 1

2

0

Interrupt generation at falling edge of the digital
input channel 0

Disabled

Enabled

:

:

:

:

2

7

Interrupt generation at falling edge of the digital
input channel 7

Disabled

Enabled

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