Siemens SIMATIC Compact FF Link - Structure of the Diagnostic Blocks; Default Diagnosis

Diagnostic blocks in S7 standard mode and in the redundancy mode
The table below shows the lengths of the diagnostics blocks and their offset in the diagnostics
frame.
Table 11-1 Length and offset of the diagnostic blocks in S7 standard mode and in redundancy mode
Diagnostic block Length in bytes Offset in the non-redun‐
dancy mode
Offset in the redundancy
mode
Default diagnostics 6 0 0
Identifier-related diagnostics 6 6 6
Module status 13 12 12
Status message 38 25 25
H status 8 - 63
Interrupt section (max. 63 *) (63 *) (71 *)
Total length 63
(max. 126 *)
71
(max. 134 *)
* only if interrupts are reported
11.2.2 Structure of the diagnostic blocks
11.2.2.1 Default diagnosis
Format of the default diagnostics
The default diagnostics consists of 6 bytes and is subdivided as follows:
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%\WH
%\WH
%\WH
%\WH
6WDWLRQVWDWXVHVbbWRb
0DVWHU352),%86DGGUHVV
'HYLFHLGHQWLILHU
Figure 11-1 Format of the default diagnostics
Alarm, error, and system messages
11.2 Diagnostics of the Compact FF Link
Compact FF Link
Operating Instructions, 03/2015, A5E35651552-AA 65