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Section 4
IEC 60870-5-103
ENTRY No.
31
32
33
Table 16:
COT
1 Spontaneous
With the exception of the header (entry 0), the current values of the entries are not available on
request. The response to the corresponding generic read command is therefore COT 43
'invalid data response to generic read command'.
The current value of the group header (entry 0) corresponds to the number of subsystems in
the REB500 system software.
Table 17:
COD
<10> Description
<1> Current value
All the other entries in this group consist of the following attributes that are needed to
describe a diagnostic event generated by one of the software subsystems.
The status of a diagnostic event is indicated by an ASCII string, which can have one of the
following values:
•
Initializing
•
Major error
•
Minor error
•
Not ready
•
Normal
•
Last wish
•
Shutdown
•
No status
The error code is assigned by the application when the status changes and precisely describes
the cause of the error.
Table 18:
COD
<10> Description
<1> Current value
The following table gives an example of the ASDU 10 Generic Data that is transferred
spontaneously for a diagnostic event.
18
Group 64 (0x40)
LPL (LON protocol layer)
TRC (Traceability)
BP (Bay protection)
Used attributes of ASDU 10 for diagnostic events
CAA
0
1 to 60
Directory entry for GIN 0x4000 (header)
Data type
<1> OS8ASCII
<3> UI
Directory entry for GIN 0x40 (xx)
Data type
<1> OS8ASCII
<23>
DATASTRUCTU
RE
<1> OS8ASCII
<3> UI
<14> BINARY
TIME
© 2019 - 2020 Hitachi Power Grids. All rights reserved
for REB500 CU
for REB500 BU
Length
Number
Value / Significance
21
1
"Diagnostic information"
1
1
Number of SW subsystems
Length
Number
Value / Significance
3
1
BBP (example)
29
1
(Includes the following three
definitions)
12
1
Status
1
1
Error code
7
1
Time stamp (CP56Time2a)
Communication protocol manual IEC 60870-5-103
1MRK 511 451-UEN Rev. C
FUN
254 Generic
Distributed busbar protection REB500
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