Siemens CPU 31 Series Technical Data Manual page 53

Blocks
SFB 52/53 (read/write data
record)
SFB 54 (evaluate interrupt)
SFC102 (read predefined
parameters)
SFB 81 (read predefined
parameters)
SFC5 (query start address of a
module)
SFC 70 (query start address of
a module)
SFC49 (query the slot belonging
to a logical address)
SFC 71 (query the slot
belonging to a logical address)
The following table provides you with an overview of the system and standard functions for
SIMATIC, whose functionality must be implemented by other functions when converting from
PROFIBUS DP to PROFINET IO.
Table 3-7
Blocks
SFC 55 (write dynamic
parameters)
SFC 56 (write predefined
parameters)
SFC 57 (assign module
parameters)
You cannot use the following SIMATIC system and standard functions with PROFINET IO:
• SFC 7 (trigger hardware interrupt on DP master)
• SFC 11 (synchronize groups of DP slaves)
• SFC 72 (read data from a communication partner within local S7 station)
• SFC 73 (write data to a communication partner within local S7 station)
• SFC 74 (abort an existing connection to a communication partner within local S7 station)
• SFC 103 (determine the bus typology in a DP master)
CPU 31xC and CPU 31x, Technical Data
Manual, 01/2006 Edition, A5E00105475-06
PROFINET IO
Yes
Yes
No (replacement: SFB81)
Yes
No (replacement: SFC70)
Yes
No (replacement: SFC71)
Yes
System and Standard Functions in PROFIBUS DP that must be Implemented with
Different Functions in PROFINET IO
PROFINET IO
No
(simulate via SFB 53)
No
(simulate via SFB 81 and SFB
53)
No
(simulate via SFB 81 and SFB
53)
Communication
3.2 Communication services
PROFIBUS DP
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
PROFIBUS DP
Yes
Yes
Yes
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