Siemens Simatic S7-400 - Manual (Page 525)

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