Technical data

11.7.3 Reading Out the DP Diagnostic List
The message that a slave has new diagnostic data causes the
corresponding bit in the DP diagnostic list to be set to "1". As soon new
diagnostic data exist for at least one connected slave, this is indicated in
the group status ANZW HDB/A-NR202 (DP station list) bit 9.
Using the HDB special service, A-NR209, the diagnostic list can be read
out. When the diagnostic list is read out by the user program, the currently
set diagnostic message bits and the group diagnostic status bits are reset
on the CP.
The DP diagnostic list can always be read out regardless of group bit 9
(HDB job 202).
Distributed I/Os (DP) B89060/02
Volume 1 11 - 48