Summary of diagnostic bytes
Several diagnostic words are made available in module
IM 308-x for each bus slave. The diagnostic words and
their meaning in conjunction with the Festo CP system
are shown in the table below.
diagnostic
words
Byte Octed Diagnostic address Diagnostic address +1 Octed Byte
0
1
Station status 1 Station status 2
2
1
2
3
Station status 3 Master address
(Diag.master_Add)
4
3
4
5
Manufacturer identifier
(Ident_number
High byte F1
H
)
Manufacturer identifier
(Ident_number
Low byte 3C
H
)
6
5
6
7
Header Device-related diagnosis 1
(Error summary)
8
7
8
9
Device-related diagnosis 2
(error byte CP string 0)
Device-related diagnosis 3
(error byte CP string 1)
10
9
10
11
Device-related diagnosis 4
(error byte CP string 2)
Device-related diagnosis 5
(error byte CP string 3)
12 11
12
13
Device-related diagnosis 6
(not used)
Device-related diagnosis 7
(not used)
14 13
Contents are modified by the CP system
Fig. 3/4: Diagnostic words
3. Diagnosis
CP FB13-E 9904b 3-11