Siemens SIMATIC S7-400H - Table 8- 2 System and Standard Functions of PROFIBUS DP that Can be Emulated in PROFINET IO; Table 8- 3 Obs in PROFINET IO and PROFIBUS DP

PROFINET
8.3 Blocks in PROFINET IO
S7-400H
100 System Manual, 03/2012, A5E00267695-11
Blocks PROFINET IO PROFIBUS DP
SFC 49 "LGC_GADR"
Determining the slot that
belongs to a logical address
No
Replacement: SFC 71
Yes
SFC 71 "LOG_GEO"
Determining the slot that
belongs to a logical address
Yes Yes
The following table provides 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 8- 2 System and standard functions of PROFIBUS DP that can be emulated in PROFINET IO
Blocks PROFINET IO PROFIBUS DP
SFC 54 "RD_DPARM"
Reading predefined parameters
No
Replacement: SFB 81
"RD_DPAR"
Yes
SFC 55 "WR_PARM"
Writing dynamic parameters
No
Emulation by means of SFB 53
Yes
SFC 56 "WR_DPARM"
Writing predefined parameters
No
Emulation by means of SFB 81
and SFB 53
Yes
SFC 57 "PARM_MOD"
Assigning module parameters
No
Emulation by means of SFB 81
and SFB 53
Yes
The following SIMATIC system function is not supported for PROFINET IO:
● SFC 103 "DP_TOPOL" Determine the bus typology in a DP master
Comparison of the Organization Blocks of PROFINET IO and PROFIBUS DP
The following table lists the changes to OBs 83 und OB 86:
Table 8- 3 OBs in PROFINET IO and PROFIBUS DP
Blocks PROFINET IO PROFIBUS DP
OB 70
I/O redundancy error, for fault-
tolerant systems only
New Unchanged
OB 83
Removing and inserting
modules at runtime
New error information Unchanged
OB 86 Rack failure New error information Unchanged
Detailed information
For more information about the blocks, refer to the manual System Software for S7-300/400
System and Standard Functions
.