Siemens S7-300 appendix Mpi

Technical data of CPU 31x 7.6 CPU 317-2 DP

Technical data

Number of connections			32
can be used for
•	PG communication		Max. 31
	–	Reserved (default)	1
	–	Configurable	1 to 31
•	OP communication		Max. 31
	–	Reserved (default)	1
	–	Configurable	1 to 31
•	S7-based communication		Max. 30
	–	Reserved (default)	0
	–	Configurable	0 to 30
Routing			Yes (max. 8)
Interfaces
1st interface
Type of interface			Integrated RS485 interface
Physics			RS 485
electrically isolated			Yes
Interface power supply			max. 200 mA
(15 to 30 VDC)
Functionality
•	MPI		Yes
•	PROFIBUS DP		Yes
•	Point-to-point communication		No
MPI
Services
•	PG/OP communication		Yes
•	Routing		Yes
•	Global data communication		Yes
•	S7 basic communication		Yes
•	S7 communication
	–	As server	Yes
	–	As client	No (but via CP and loadable FBs)
•	Transmission rates		Max. 12 Mbps
DP master
Services
•	PG/OP communication		Yes
•	Routing		Yes
•	Global data communication		No
•	S7 basic communication		No
•	S7 communication		No
• Constant bus cycle time			Yes
•	SYNC/FREEZE		Yes
•	DPV1		Yes

7-30	CPU 31xC and CPU 31x, Technical data
	Manual, Edition 08/2004, A5E00105475-05