Siemens Simatic S7-300 CPU 31xC and CPU 31x S7-300 - Manual (Page 122)

Technical data of CPU 31xC
6.3 CPU 313C
CPU 31xC and CPU 31x, Technical data
6-12
Manual, Edition 08/2004, A5E00105475-05
Technical data
can be used for
• PG communication
–
Reserved (default)
– Configurable
Max. 7
1
from 1 to 7
• OP communication
–
Reserved (default)
– Configurable
Max. 7
1
from 1 to 7
• S7 basic communication
–
Reserved (default)
– Configurable
Max. 4
4
from 0 to 4
Routing No
Interfaces
1st interface
Type of interface
Integrated RS485 interface
Physics RS 485
electrically isolated No
Interface power supply
(15 to 30 VDC)
Max. 200 mA
Functionality
• MPI Yes
• PROFIBUS DP No
• PtP communication No
MPI
Services
• PG/OP communication Yes
• Routing No
• Global data communication Yes
• S7 basic communication Yes
• S7 communication
–
As server
– As client
Yes
No (but via CP and loadable FBs)
• Transmission rates max. 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