Siemens S7-300 appendix Availability of connection resources, S7 basic, Resources, Communication

Communication

3.3 S7 connections

Availability of connection resources

Table 3-11 Availability of connection resources

CPU	Total number	Reserved for			Free
	connection				S7 connections
		PG	OP communication	S7 basic
	resources
		communication		communication
312C	6	1 to 5, default 1	1 to 5, default 1	0 to 2, default 2	Displays all non-
313C	8	1 to 7, default 1	1 to 7, default 1	0 to 4, default 4	reserved S7
					connection resources
313C-2 PtP
					as free connection
313C-2 DP
					resources.
314C-2 PtP	12	1 to 11, default	1 to 11, default 1	0 to 8, default 8
314C-2 DP		1
312	6	1 to 5, default 1	1 to 5, default 1	0 to 2, default 2
314	12	1 to 11, default	1 to 11, default 1	0 to 8, default 8
		1
315-2 DP	16	1 to 15, default	1 to 15, default 1	0 to 12, default 12
315-2 PN/DP		1
317-2 DP	32	1 to 31, default	1 to 31, default 1	0 to 30, default 0
317-2 PN/DP		1

Note

When using a CPU 315-2 PN/DP, you can configure up to 14 connection resources for S7 communication in NetPro: These connections are then reserved. When using a

CPU 317-2 PN/DP, you can configure up to 16 connection resources for S7 communication in NetPro.

3-30	CPU 31xC and CPU 31x, Technical data
	Manual, Edition 08/2004, A5E00105475-05