Siemens S7-300 appendix Routing Interface X1 configured as Yes

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

Technical data

Routing
• Interface X1 configured as			Yes
	–	MPI	Max. 10
	–	DP master	Max. 24
	–	DP slave (active)	Max. 14
• Interface X2 configured as
	–	PROFINET	Max. 24
CBA (at 50 % communication load)
• Maximum data length for arrays and
	structures between two partners
	–	Acyclic PROFINET interconnections	1400 bytes
	–	Cyclic PROFINET interconnections
			450 bytes
	–	Local interconnections
			Slave-dependent
• Number of coupled PROFIBUS devices			16
• Total of all master/slave connections			1000
• Number of device-internal and PROFIBUS			500
	interconnections
• Number of remote interconnecting partners			32
Remote interconnections with acyclical transmission
Scan rate: Minimum scan interval			500 ms
Number of incoming interconnections			100
Number of outgoing interconnections			100
Remote interconnections with cyclical transmission
Scan rate: Minimum scan interval			10 ms
Number of incoming interconnections			200
Number of outgoing interconnections			200
HMI interconnections via PROFINET (acyclic)
HMI interconnections			500 ms
Number of HMI variables			200
Sum of all interconnections			4000 bytes input/4000 bytes output
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
•	PROFINET		No

CPU 31xC and CPU 31x, Technical data	7-37
Manual, Edition 08/2004, A5E00105475-05