Standard Diagnostics - Siemens SINAMICS S120 Series Function Manual

3.5.2.1

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)
3.5.2.2 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
...
x Bit
structure
Communication
Function Manual, 12/2018, 6SL3097-5BD00-0BP0
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_n+1 KB_n
Communication according to PROFIdrive
3.5 Diagnostics channels
3 2
Cfg_Fault Station_
Ready
1 Stat_Diag
0 0
3 2
KB_3 KB_2
KB_11 KB_10
... ...
1 0
Station_
Not_ Non_
Exist
= 0
Prm_Req
= 0
0 0
1 0
KB_1 KB_0
KB_9 KB_8
... ...
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