Siemens SINAMICS Configuration Manual page 110

Communication
A.1 Communication
The diagnostic data type can be uniquely identified based on the header.
Note
The master must operate in the DPV1 mode.
Standard diagnostics
For communication via PROFIBUS, standard diagnostics is structured as follows.
Bit
Octet Name
1 Station
status 1
2 Station
status 2
3 Station
status 3
4
5
6
In this context, the following values are decisive for diagnostics:
● Ext_Diag
– Group signal for diagnostics in the slave
– = 1, if at least 1 alarm is active
● Ext_Diag_Overflow
Display, diagnostics overflow in the slave (for more than 240 bytes)
Identifier-related diagnostics
The identifier-related diagnostics provides a bit (KB_n) for each slot 1 allocated when
configuring the device. If a diagnostics message is active at a slot, then it's KB_n = true.
Bit
Octet Name
1 Header-
Byte
Station
status 1
2 Bit
structure
3 Bit
structure
110
7 6
Master_ Prm_Fault
Lock
= 0
0 0
Ext_ 0
Diag_
Overflow
7 6
0 1
KB_7 KB_6
... ...
5 4
0 Not_ Ext_Diag
Supported
Sync_ Freeze_ WD_On
Mode Mode
0 0
Master_Add
Ident_Number (HighByte) of the slave
Ident_Number (LowByte) of the slave
5 4
Block length (2 ... 32) incl. this byte
KB_5 KB_4 KB_3
... ... KB_11
3 2 1
Cfg_Fault Station_
Not_
Ready
1 Stat_Diag
= 0
0 0 0
3 2 1
KB_2 KB_1
KB_10 KB_9
Configuration Manual, 08/2017, A5E36912609A
0
Station_
Non_
Exist
= 0
Prm_Req
0
0
KB_0
KB_8
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