Display Of The States Of The Interrupt Inputs Of The Cpu 314 Ifm - Siemens SIMATIC S7-300 Series Reference Manual

Display of the Interrupt Inputs
In variable OB40_POINT_ADDR, you can view the interrupt inputs which have
triggered a process interrupt. Figure 1-9 shows the allocation of the interrupt inputs
to the bits of the double word.
Note: Several bits can be set if interrupts are triggered by several inputs within
short intervals (< 100 ms). That is, the OB is started once only, even if several
interrupts are pending.
31 30
Reserved
PRIN: Process
interrupt
Figure 1-9

Display of the States of the Interrupt Inputs of the CPU 314 IFM

PLC S7-300, CPU Specifications CPU 312 IFM to CPU 318-2 DP
A5E00111190-01
5 4 3 2 1
0 Bit No.
PRIN from
PRIN from
PRIN from
PRIN from
I126.0
I126.1
I 126.2
I126.3
CPUs
1-45