Siemens S7-300 appendix Mpi

Technical data of CPU 31x 7.7 CPU 317-2 PN/DP

Technical data

MPI
Services
•	PG/OP communication		Yes
•	Routing		Yes
•	Global data communication		Yes
•	S7 basic communication		Yes
•	S7 communication		Yes
	–	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
Transmission speed			Up to 12 Mbps
Number of DP slaves			124
DP slave
Services
•	Routing		Yes (only if interface is active)
•	Global data communication		No
•	S7 basic communication		No
•	S7 communication		No
•	Direct data exchange		Yes
•	Transmission rates		Up to 12 Mbps
• Automatic baud rate search			Yes (only if interface is passive)
•	Intermediate memory		244 bytes I / 244 bytes O
•	Address areas		max. 32 with max. 32 bytes each
•	DPV1		No
2nd interface
Type of interface			PROFINET
Physics			Ethernet
electrically isolated			Yes
Autosensing (10/100 Mbps)			Yes

7-38	CPU 31xC and CPU 31x, Technical data
	Manual, Edition 08/2004, A5E00105475-05