ABB AC31 Assembly And Operation Manual page 17

Fig. 15: Visualization: CS31 bus diagnosis
Table 8: Interpretation of variable byStateDiag
Bit
0
1
2
3
4
5
6
7
All bits of byStateDiag equal 0 -> no error in CS31 bus slave.
The variables byDiagChannel and byDiagErr in the structure strCS31_DiagOneModule
include the error channel and code. The possible values of these variables are indicated in the
documentation of the respective CS31 bus slave.
Diagnosis The Diagnosis system of the AC500 series provides the errors in the following format:
system
2018/09/24
System data and CS31 bus system data > CS31 bus system data
Value
1
2
4
8
16
32
64
128
3ADR010122, 8, en_US
AC31 Adapters
Description
CS31 bus slave disconnected
Not used
slave on CS31 bus bus not
configured
Difference in the number of
data bytes between configura-
tion and CS31 bus
Internal device error
Channel error
Not used
Not used
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