Siemens Simatic S7-300 Technical Data Manual page 128

Technical data of CPU 31xC
6.4 CPU 313C-2 PtP and CPU 313C-2 DP
Technical data
MPI
Services
PG/OP communication
•
Routing
•
Global data communication
•
S7 basic communication
•
S7 communication
•
As server
–
As client
–
Type of interface
Physics
electrically isolated
Interface power supply (15 to 30 VDC)
Number of connections
Functionality
MPI
•
PROFIBUS DP
•
Point-to-point communication
•
DP master
Number of connections
Services
PG/OP communication
•
Routing
•
Global data communication
•
S7 basic communication
•
S7 communication
•
Constant bus cycle time
•
SYNC/FREEZE
•
Enable/disable DP slaves
•
DPV1
•
Transmission rates
•
Number of DP slaves per station
•
Address area
•
User data per DP slave
•
6-18
CPU 313C-2 PtP
Yes
No
Yes
Yes
•
Yes
•
No (but via CP and loadable FBs)
•
Integrated RS422/RS485 interface
RS 422/485
Yes
No
None
No
No
Yes
–
–
–
–
–
–
–
–
–
–
–
–
–
–
CPU 313C-2 DP
Yes
Integrated RS485 interface
RS 485
Yes
Max. 200 mA
8
No
Yes
No
8
Yes
Yes
No
No
No
Yes
Yes
Yes
Yes
Up to 12 Mbps
Max. 32
Max. 1 KB I / 1 KB O
Max. 244 bytes I / 244 bytes O
CPU 31xC and CPU 31x, Technical data
Manual, Edition 08/2004, A5E00105475-05