Addressing
7.2 User-specific addressing of modules
S7-300, CPU 31xC and CPU 31x: Installation
Operating Instructions, Edition 08/2004, A5E00105492-05
7-7
CPU 313C-2 PtP and CPU 313C-2 DP
Addresses of the integrated I/Os of these CPUs:
Table 7-3
Integrated I/Os of CPU 313C-2 PtP/DP
Inputs / outputs
Default addresses
Comments
16 digital inputs
124.0 to 125.7
of which 12 inputs are for
technological functions:
124.0 to 125.0
125.4 to 125.6
16 digital outputs
124.0 to 125.7
of which 3 inputs are for
technological functions:
124.0 to 124.2
All digital inputs can be assigned an
interrupt function.
Optional technological functions:
•
Counting
•
Frequency measurement
•
Pulse width modulation
CPU 314C-2 PtP and CPU 314C-2 DP
Addresses of the integrated I/Os of these CPUs:
Table 7-4
Integrated I/Os of CPU 314C-2 PtP/DP
Inputs / outputs
Default addresses
Comments
24 digital inputs
124.0 to 126.7
of which 16 inputs are for
technological functions:
124.0 to 125.7
16 digital outputs
124.0 to 125.7
of which 4 inputs are for
technological functions:
124.0 to 124.3
4+1 analog inputs
752 to 761
2 analog outputs
752 to 755
All digital inputs can be assigned an
interrupt function.
Optional technological functions:
•
Counting
•
Frequency measurement
•
Pulse width modulation
•
Positioning
Special features
You cannot influence outputs with transfer instructions if they are assigned to technological
functions.
I/Os not configured for technological functions can be used as standard I/Os.