Table 3-7 System And Standard Functions In Profibus Dp That Must Be Implemented With; Table 3-8 Obs In Profinet Io And Profibus Dp - Siemens Simatic S7-300 Technical Data Manual

Communication
3.2 Communication services
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
SFC55 (write dynamic
parameters)
SFC56 (write predefined
parameters)
SFC57 (assign parameters to
module)
You cannot use the following SIMATIC system and standard functions with PROFINET IO:
• SFC7 (trigger hardware interrupt on DP master)
• SFC11 (synchronize groups of DP slaves)
• SFC12 (deactivate and activate DP slaves)
• SFC72 (read data from a communication partner within local S7 station)
• SFC73 (write data to a communication partner within local S7 station)
• SFC74 (abort an existing connection to a communication partner within local S7 station)
Comparison of the Organization Blocks of PROFINET IO and PROFIBUS DP
Here, there are changes in OBs 83 and 86 as shown in the table below.
Table 3-8
Blocks
OB83 (removing and inserting
modules and submodules
during operation)
OB86 (rack failure)
Detailed Information
For detailed descriptions of the individual blocks, refer to the manual
S7-300/400 System and Standard Functions
3-22
System and Standard Functions in PROFIBUS DP that must be Implemented with
Different Functions in PROFINET IO
PROFINET IO
No
(implement with SFB53)
No
(implement with SFB81 and
SFB53)
No
(implement with SFB81 and
SFB53)
OBs in PROFINET IO and PROFIBUS DP
PROFINET IO
Also possible with an S7-300,
new error information
New error information
PROFIBUS DP
Yes
Yes
Yes
PROFIBUS DP
With an S7-300 not possible
Removing and inserting during
operation is reported by slaves
added using a GSD file by
means of a diagnostic interrupt;
in other words OB82.
With S7 slaves, OB86 is called
due to the station failure.
Unchanged
.
CPU 31xC and CPU 31x, Technical data
Manual, Edition 08/2004, A5E00105475-05
System Software for