Siemens Simatic S7-300 CPU 31xC Series User Manual

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.

Siemens Simatic S7-300 CPU 31xC Series Specifications

General

Series	S7-300 CPU 31xC
Power Supply	24 V DC
Communication Interfaces	MPI, PROFIBUS DP
Programming Languages	LAD, STL, FBD, SCL
Operating Temperature	0°C to +60°C
Memory	48 KB - 512 KB
Dimensions	40 x 125 x 130 mm (varies by model)