Technical data

Structure of the acknowledgment field for "single DP station
diagnostics"
Causes of errors in the acknowledgment 0A
H
"DP slave configuration
error detected by DP master when configuring the DP slave" are as follows:
– Configured I/O area for the DP slave does not match the DP slave
I/O configuration or
– DP slave works with consistent I/O areas, but the free mode is
configured on the CP.
1st byte
2nd byte
3rd byte
4th byte
8th byte
9th byte
34th byte *
5th byte
7th byte
6th byte
* can be extended up to 244 bytes
Length in bytes
Acknowledgment
Station status
byte 1
Station status
byte 2
Master address
Station status
byte 3
Ident_number
Extended
diagnostics
- with negative acknowl. -> 2
- with positive acknowl. 8 - 244
Structure of thestation status bytes
Vendor ID, dependent of DP slave type
Bus address of the DP master, which assigned
parameters to the slave
DP slave-specific diagnostic information
00 hex ok
01 hex syntax error in job field
02 hex error in HDB handling
03 hex CP not in logical ring
04 hex slave station not configured
05 hex slave nor replying (failed)
0A hex DP slave configuration error detected by master
when configuring the DP slave
0B hex DP polling list processing is in the
STOP mode
Fig. 11.27 Structure of the Acknowledgment Field for "Single DP Station Diagnostics"
Distributed I/Os (DP) B89060/02
Volume 1 11 - 54