Siemens Simatic S7-300 CPU 31xC and CPU 31x S7-300 - Manual (Page 173)

Technical data of CPU 31x
7.2 CPU 312
CPU 31xC and CPU 31x, Technical data
Manual, Edition 08/2004, A5E00105475-05
7-7
Technical data
MPI
Services
• PG/OP communication Yes
• Routing No
• Global data communication Yes
• S7 basic communication Yes
• S7 communication
–
As server
– As client
Yes
No
• Transmission rates 187.5 kbps
Programming
Programming language
LAD/FBD/STL
Available instructions See the Instruction List
Nesting levels 8
System functions (SFCs) See the Instruction List
System function blocks (SFBs) See the Instruction List
User program security Yes
Dimensions
Mounting dimensions W x H x D (mm)
40 x 125 x 130
Weight 270 g
Voltages and currents
Power supply (rated value)
24 VDC
• Permitted range 20.4 V to 28.8 V
Current consumption (no-load operation) Typically 60 mA
Inrush current Typically 2.5 A
Power consumption (nominal value) 0,6 A
I 2 t 0.5 A 2 s
External fusing of power supply lines
(recommended)
min. 2 A
Power loss Typically 2,5 W