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:
%\WH
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%\WH
%\WH
%\WH
%\WH
6WDWLRQVWDWXVHVbbWRb
0DVWHU352),%86DGGUHVV
'HYLFHLGHQWLILHU
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
