Siemens S7-300 appendix DP slave Except for DP slave at both interfaces, 2nd interface

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

Technical data

Transmission speed		Up to 12 Mbps
Number of DP slaves		124
Address range per DP slave		max. 244 bytes
DP slave
(except for DP slave at both interfaces)
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		Integrated RS485 interface
Physics		RS 485
electrically isolated		Yes
Type of interface		Integrated RS485 interface
Interface power supply (15 to 30 VDC)		max. 200 mA
Functionality
MPI		No
PROFIBUS DP		Yes
Point-to-point communication		No
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
Address area		max. 244 bytes

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