Siemens S7-300 appendix Blocks CPU 313C-2 PtP CPU 313C-2 DP, Assembly CPU 313C-2 PtP CPU 313C-2 DP

				Technical data of CPU 31xC
			6.4 CPU 313C-2 PtP and CPU 313C-2 DP
Technical data
		CPU 313C-2 PtP		CPU 313C-2 DP
Data areas and their retentivity		CPU 313C-2 PtP		CPU 313C-2 DP
Flag bits		256 bytes
•	Retentive memory	Configurable
•	Default retentivity	MB0 to MB15
Clock flag bits		8 (1 byte per flag bit)
Data blocks		Max. 511
		(DB 1 to DB 511)
•	Length	max. 16 KB
Local data per priority class		max. 510 bytes
Blocks		CPU 313C-2 PtP		CPU 313C-2 DP
Total		1024 (DBs, FCs, FBs)
		The maximum number of blocks that can be loaded may be reduced if you are
		using another MMC.
OBs		see the Instruction List
•	Length	max. 16 KB
Nesting depth
•	Per priority class	8
• additional within an error OB		4
FBs		Max. 512
		(FB 0 to FB 511)
•	Length	max. 16 KB
FCs		Max. 512
		(FC 0 to FC 511)
•	Length	max. 16 KB
Address areas (I/O)		CPU 313C-2 PtP		CPU 313C-2 DP
Total I/O address area		max. 1024 bytes/1024 bytes		max. 1024 bytes/1024 bytes
		(can be freely addressed)		(can be freely addressed)
•	Distributed	None		max. 1008 bytes
I/O process image		128 bytes/128 bytes		128 bytes/128 bytes
Digital channels		Max. 1008		Max. 8192
•	of those local	Max. 992		Max. 992
•	Integrated channels	16 DI / 16 DO		16 DI / 16 DO
Analog channels		Max. 248		Max. 512
•	of those local	Max. 248		Max. 248
•	Integrated channels	None		None
Assembly		CPU 313C-2 PtP		CPU 313C-2 DP
Racks		Max. 4
Modules per rack		max. 8; max. 7 in rack 3
Number of DP masters
•	Integrated	No		1
•	via CP	Max. 1		Max. 1

CPU 31xC and CPU 31x, Technical data	6-15
Manual, Edition 08/2004, A5E00105475-05