Communication
3.2 Communication services
CPU 31xC and CPU 31x, Technical Data
3-20 Manual, 01/2006 Edition, A5E00105475-06
Reference
For information
• on PROFINET refer to the
From PROFIBUS DP to PROFINET IO programming manual.
This manual also provides a comprehensive overview of the new PROFINET blocks and
system status lists.
See also
PROFINET (PN) (Page 3-3)
3.2.10.2 Blocks in PROFINET IO
Content of this Section
This section explains the following:
• Which blocks are intended for PROFINET
• Which blocks are intended for PROFIBUS DP
• Which blocks are intended for both PROFINET IO and PROFIBUS DP
Compatibility of the New Blocks
For PROFINET IO, it was necessary to create some new blocks, 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:
• 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 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 (as of firmware V.2.4.0) Yes
SFC 13 (read diagnostic data of
a DP slave)
No
Substitute:
• event-related: SFB 54
• state-related: SFB 52
Yes
SFC 58/59 (write/read data
record in I/O)
No (replacement: SFB 53/52) Yes (but should already have
been replaced by SFB 53/52 in
DPV1)
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