PROFIBUS DP communication module
9.12 Data sets (BS)
3RW44 soft starters
186 Manual, 03/2017, NEB535219502000/RS-AB/008
Data sets (BS)
Reading/writing data sets with STEP 7
You can access the data sets of the soft starter from the user program.
● Writing data sets:
S7-DPV1 master: By calling up SFB 53 "WR_REC" or SFC 58
S7 master: by calling up SFC 58
● Reading data sets:
S7-DPV1 master: by calling up SFB 52 "RD_REC" or SFC 59
S7 master: by calling up SFC 59
You can find additional information about the SFBs
● in the reference manual "System Software for S7-300/400, System and Standard
Functions" (https://support.industry.siemens.com/cs/ww/en/view/1214574)
● in the STEP 7 online help
When data longer than one byte is stored, the bytes are arranged as follows ("big endian"):
Figure 9-9 Byte arrangement in "big endian" format
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