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Siemens Simatic S7-400 User Manual

Page 526

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Interface Submodules

13-30

S7-400, M7-400 Programmable Controllers Module Specifications

A5E00069467-07

Mode Register

Tables 13-36 and 13-37 give an overview of the mode register.

Table 13-36

Offset Address for the Mode Register

(IF 961-DIO)

Offset Address

Function

Remarks

7

Mode register

Read/write

Table 13-37

Meaning of the Bits in the Mode Register (IF 961-DIO)

Bit

Function

= 0

= 1

2

0

Input delay

3 ms

750

ms

2

1

Reserved

:

:

2

7

Reserved

Reset Status

After switching on the interface submodule, the input delay is set to 3 ms.

Interrupt Request

The interface submodule supplies an interrupt request (IRQa).

You can define the assignment of the IRQa interrupt request to the relevant
processor interrupt request in the BIOS setup.

Submodule ID

The IF 961-DIO interface submodule has the submodule ID 02

H

.

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