Diagnostics - Siemens CPU 31 Series Technical Data Manual

Technical data of CPU 31xC
6.6 Technical data of the integrated I/O
Start information for OB40
The table below shows the relevant temporary variables (TEMP) of OB40 for the interrupt
inputs of 31xC CPUs. A description of process interrupt OB 40 is found in the Reference
Manual
Table 6-11
Byte
6/7
8 on
Figure 6-9
PRAL: process interrupt
The inputs are assigned default addresses.
6.6.5

Diagnostics

Standard I/O
Diagnostic data is not available for integrated I/O which is operated as standard I/O (see also
the Reference Manual
Technological functions
Diagnostics options for the respective technological function are found in the Manual
Technological Functions
6-44
System and Standard Functions
Start information for OB40, relating to the interrupt inputs of the integrated I/O
Variables
OB40_MDL_ADDR
OB40_POINT_ADDR
PRAL: process interrupt
Inputs are designated with default addresses.
Displaying the statuses of CPU 31xC interrupt inputs
Module Data
.
.
Data type
WORD B#16#7C
DWORD see the figure
below
).
Description
Address of the interrupt-
triggering module (here: default
addresses of the digital inputs)
Displaying the interrupt-
triggering integrated inputs
CPU 31xC and CPU 31x, Technical Data
Manual, 01/2006 Edition, A5E00105475-06