Siemens M7-400, S7-400 Mode Register, Reset Status

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
7Mode register Read/write
Table 13-37 Meaning of the Bits in the Mode Register (IF 961-DIO)
Bit Function = 0 = 1
20Input delay 3 ms 750 ms
21Reserved
: :
27Reserved
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 02H.