Siemens S7-300 appendix Blocks, New

Communication 3.2 Communication services

Comparison of the System and Standard Functions of PROFINET IO and PROFIBUS DP

For CPUs with an integrated PROFINET interface, the table below provides you with an overview of:

•System and standard functions for SIMATIC that you may need to replace when converting from PROFIBUS DP to PROFINET IO.

•New system and standard functions

Table 3-6	New System Standard Functions of PROFINET IO and PROFIBUS DP and Those That
	Must Be Replaced
Blocks		PROFINET IO	PROFIBUS DP
SFC13 (read diagnostic data of		No	Yes
a DP slave)		Substitute:
		• event-related: SFB 54
		• state-related: SFB 52
SFC58/59 (write/read data		No (replacement: SFB53/52)	yes (but should already have
record in I/O)			been replaced by SFB53/52 in
			DPV1)
SFB52/53 (read/write data		Yes	Yes
record)
SFB54 (evaluate alarm)		Yes	Yes
SFC102 (read predefined		No (replacement: SFB81)	Yes
parameters)
new:		Yes	Yes
SFB81 (read predefined
parameters)
SFC5 (query start address of a		No (replacement: SFC70)	Yes
module)
new:		Yes	Yes
SFC70 (query start address of a
module)
SFC49 (query the slot belonging		No (replacement: SFC71)	Yes
to a logical address)
new:		Yes	Yes
SFC71 (query the slot belonging
to a logical address)

CPU 31xC and CPU 31x, Technical data	3-21
Manual, Edition 08/2004, A5E00105475-05