Is there an overview of the comparison between PROFINET and
As an introduction to PROFINET there is the PROFINET
System Description (Entry-ID: 19292127) and the document
PROFINET IO from PROFIBUS DP to PROFINET IO (Entry-ID:
19289930). These documents deal with the comparison of the
communications technology and the necessary changes in the user
program. This is due to the quantity structure that is partly
enlarged in PROFINET IO.
The new blocks and system state lists (SSL) replace the previous
versions and are for the most part compatible. They can be used
equally well for PROFINET IO and PROFIBUS DP.
If you are only using PROFIBUS DP, in principle you can continue
to use the usual blocks and system state lists for PROFIBUS DP. But
it is recommended to switch to the new system and default functions
in any case.