Structure Of The Diagnostic Blocks; Default Diagnosis - Siemens SIMATIC Compact FF Link Operating Instructions Manual

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
Default diagnostics
Identifier-related diagnostics
Module status
Status message
H status
Interrupt section
Total length
* 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:
Figure 11-1
Compact FF Link
Operating Instructions, 03/2015, A5E35651552-AA
Length in bytes
6
6
13
38
8
(max. 63 *)
Format of the default diagnostics
Alarm, error, and system messages
11.2 Diagnostics of the Compact FF Link
Offset in the non-redun‐
dancy mode
0
6
12
25
-
(63 *)
63
(max. 126 *)
Offset in the redundancy
mode
0
6
12
25
63
(71 *)
71
(max. 134 *)
65