Communication
2.1 PROFIBUS communication
SIMOCODE pro - Communication
Function Manual, 11/2018, A5E40508495002A/RS-AC/003
37
Data records
Records - general information
Data records contain additional information about the DP slave that can be read and, in
some cases, written.
Access is effected via acyclic DPV1 services for reading and writing these records.
Operation, monitoring, and parameterization is possible, for example, by SIMOCODE pro.
You can use these services as long as they are supported by your DP master. You will find
an overview of the records provided by SIMOCODE pro in Chapter PROFIBUS data records
(Page 157).
Unlike when cyclic I/O data is accessed, special function blocks must be called in the PLC to
access DPV1 data records in the user program.
Access to data records in STEP7
Read and write access to the data records takes with the system function blocks
SFB 52 "RDREC" and SFB 53 "WRREC".
You will find further information about SFB and SFC in the STEP7 online help.
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