Technical data

DP group messages of the DP station list
The DP ANZW bits 8-11 of job 202 provide the following DP group
message:
Bit 11 10 9 8
of ANZW/A-NR: 202
0 = no error, all the configured DP slaves are in
the data transfer phase
1= at least one DP slave is not in the data
transfer phase
Cause of error, what to do:
To find out which slave(s) is affected, you must
read out the DP station list using
HDB-RECEIVE A-NR: 202.
Cause of error, what to do:
use the special service "DP station diagnostic list"
HTB-A-NR: 209, to read out the diagnostic list
Using the special service "Read single DP slave diagnostic
data", HTB-A-NR: 209, it is possible to obtain an accurate
error analysis for every slave.
Possible causes of a group message are;
- DP slave, does not reply on the bus (not connected,
switched off)
0 = cyclic global control job not sent
1= cyclic global control job sent
0 = there are no new diagnostic data for DP slave
1= there are diagnostic data for a DP slave
0 = no timeout occurred during processing of the DP polling list
1= a timeout occurred during processing of the DP polling list
The selected monitoring time for processing the polling
list was exceeded.
Possible causes of this error message:
- problems on the bus
- delayed DP polling list processing due to parallel
processing of other acyclic services on the CP.
To find out which slave(s) is affected, you must
Fig. 17.10 The ANZW Bits 8-11 of Job 202
Appendix B8976060/02
Volume 1 17 - 18