Siemens CPU 31 Series Technical Data Manual page 137

Technical data
Interfaces
1st interface
Type of interface
Physics
electrically isolated
Interface power supply (15 to 30 VDC)
Functionality
MPI
•
PROFIBUS DP
•
Point-to-point connection
•
MPI
Number of connections
Services
PG/OP communication
•
Routing
•
Global data communication
•
S7 basic communication
•
S7 communication
•
As server
–
As client
–
Transmission rates
•
2nd interface
Type of interface
Physics
electrically isolated
Interface power supply (15 to 30 VDC)
Number of connections
Functionality
MPI
•
PROFIBUS DP
•
Point-to-point connection
•
DP master
Number of connections
Services
PG/OP communication
•
Routing
•
Global data communication
•
S7 basic communication
•
S7 communication
•
Constant bus cycle time
•
SYNC/FREEZE
•
CPU 31xC and CPU 31x, Technical Data
Manual, 01/2006 Edition, A5E00105475-06
CPU 314C-2 PtP
CPU 314C-2 PtP
Integrated RS485 interface
RS 485
No
Max. 200 mA
Yes
No
No
12
Yes
No
Yes
Yes
Yes
No (but via CP and loadable FBs)
Max. 187.5 kbps
CPU 314C-2 PtP
Integrated RS422/RS485 interface
RS 422/485
Yes
No
None
No
No
Yes
–
–
–
–
–
–
–
–
Technical data of CPU 31xC
6.5 CPU 314C-2 PtP and CPU 314C-2 DP
CPU 314C-2 DP
CPU 314C-2 DP
Yes
CPU 314C-2 DP
Integrated RS485 interface
RS 485
Yes
Max. 200 mA
12
No
Yes
No
12
Yes
Yes
No
No
No
Yes
Yes
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