Diagnostics For A Default Start-Up With The Im308C; Basic Structure Of Diagnostic Message; Indication Of Failed Asi Slaves - Siemens SIMATIC Distributed I/O System DP/ASi Link Manual

8.2.9

Diagnostics for a Default Start-Up with the IM308C

(6ES7 156 0AA00-0XA0 or Later, Issue 3)
Structure For the default start-up, the diagnostic message contains 32 bytes of data and
complies with the PROFIBUS DP standard. The table below describes the
basic structure of the diagnostic message.
Table 8-19
0
1
2
3
4
5
6
7
8
9
10
11
12 to 15
16 to 31
Diagnostic data
Diagnostic bytes 12 to 15 indicate an ASi slave failure. Table 8-16 shows the
(bytes 12 to 15) assignment of the ASi addresses.
Failed ASi slaves are marked "1".
Table 8-20
12
13
14
15
*
Distributed I/O System DP/ASi Link
EWA 4NEB 710 6055-02b

Basic structure of diagnostic message

Byte(s) Contents
02 Station status 1
H
05 Station status 2
H
00 Station status 3
H
FF Station number, DP Master
H
80 Manufacturer ID (801B
H
1B
H
1A Header and length of module diagnosis
H
01 Module diagnosis
H
04 Header and length of first station diagnosis
H
00 Length of S7 area
H
22 Part 2 of diagnostic data
H
00
H
See Table Part 1 of diagnostic data
8-20
See Table Actual configuration of ASi installation
8-21

Indication of failed ASi slaves

Byte Bit (Corresponds to ASi Address)
7 6 5
7 6 5
15 14 13
23 22 21
31 30 29
Byte 12.0 is not assigned.
Diagnostics and Error Handling
Meaning
)
H
4 3 2 1
4 3 2 1
12 11 10 9
20 19 18 17
28 27 26 25
0
*
8
16
24
8-21