PROFINET
6.4 Blocks in PROFINET IO
S7-400 Automation System, CPU Specifications
6-6 Manual, 10/2006, 6ES7498-8AA04-8BA0
6.4 Blocks in PROFINET IO
Compatibility of the New Blocks
For PROFINET IO, some new blocks were created, among other things, because larger
configurations are now possible with PROFINET. You can also use the new blocks with
PROFIBUS.
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 the following functions:
● 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 6-1 New System and Standard Functions/System and Standard Functions to be Replaced
Blocks PROFINET IO PROFIBUS DP
SFC 12
Deactivation and activation of
DP slaves/IO devices
Yes
S7-400: As of firmware V5.0
Yes
SFC 13
Read diagnostic data of a DP
slave
No
Replacement:
• Event-
related:
SFB 54
• State-related:
SFB 52
Yes
SFC 58/59
Write/read record in the I(O
devices.
No
Replacement: SFB 53/52
Yes, if you have not already
replaced these SFBs under
DPV 1 by SFB 53/52.
SFB 53/52
Read/write record
Yes Yes
SFB 54
Evaluate interrupts
Yes Yes
SFB 81
Read predefined parameters
Yes Yes
SFC 5
Query start address of a module
No
Replacement: SFC 70
Yes
SFC 70
Query start address of a module
Yes Yes
SFC 49
Query the slot belonging to a
logical address
No
Replacement: SFC 71
Yes
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