Configuring
4-24 Application Module FM 458-1 DP - User Manual
A5E01078222-02 Edition 03.2009
4.4.5 Commissioning/diagnostics
4.4.5.1 Diagnostics function block
Master- or slave-specific diagnostic information can be output from
PROFIBUS DP using the DPDIAG and DPSLDG function blocks.
Further information
on the diagnostic data, refer to the User Documentation for the individual
slaves.
DPDIAG block: Diagnostics overview
The system diagnostics provides an overview as to which slave has
provided diagnostic data.
The 4 double words are bit-coded.
Each bit is assigned a slave with its PROFIBUS address
corresponding to the following table.
If the bit for the associated slave is set, then the slave has provided
diagnostics data.
Output Bit 16 Bit 15 Bit 14 ... Bit 5 Bit 4 Bit 3 Bit 2 Bit 1
15 14 13 ... 4 3 (2) (1) (0) DG1
31 30 29 20 19 18 17 16
... ... ...
111 110 109 100 99 98 97 96 DG4
- - (125) ... 116 115 114 113 112
Table 4-4 Assigning system diagnostics/data transfer list to the slave PROFIBUS address
Data transfer list
The data transfer list provides an overview of the slaves which were
involved with data transfer within a configured time.
The double words (DL1 – DL4) are bit-coded as for the system
diagnostics.
If the bit for the assigned slave is set, then data is being transferred.
General
Overview,
diagnostic data
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