1MRK 511 371-UEN
Section 3
IEC 60870-5-103
Communication Protocol Manual, IEC 60870-5-103
21
Distributed busbar protection REB500
The following table gives an example of the ASDU 10
‘Generic Data’
that is
transferred spontaneously for a double-point indication.
Table 27
TYPE IDENTIFICATION: Generic data
0
0
0
0
1
0
1
0
T
ype
I
dentification
10
DATA UNIT
1
0
0
0
0
0
0
1
V
ariable
S
tructure
Q
ualifier SQ=1,
SQ_No.= 1
IDENTIFIER
Spontaneous <1>
C
ause
O
f
T
ransmission
COT
GEN <254>
Fun
ction type
FUN
INFORMATI
ON
Read value of single entry <244>
Inf
ormation number
INF
OBJECT
<0>
Return information identifier RII
{
1, 0, 0
}
Number of generic data sets NGD
{
NO, COUNT, CONT
}
46 H
Generic identification
number
Group
<46H .. 49H>
01 H
Entry
<1 .. 255>
Current value <1>
Kind of description
KOD
DATA STRUCTURE
<23>
DATA TYPE
14
DATA SIZE
GDD
1,0
NUMBER
,
CONT
<11> DOUBLE POINT I
NFORMATION WITH
T
RANSIENT
AND
E
RROR
DATA TYPE
1
DATA SIZE
GDD 1
1,0
NUMBER
,
CONT
0
0
0
0
0
0
<0 .. 3>
GID 1
<14>
BINARY TIME
DATA TYPE
7
DATA SIZE
GDD 2
1,0
NUMBER
,
CONT
Time stamp (CP56Time2a)
GID 2
3.5.5
Display of busbar differential currents
The differential currents are displayed for each corresponding busbar zone (1..32)
(see transfer of differential currents).
Table 28
Used attributes of ASDU 10 for differential current
COT
CAA
FUN
1 Spontaneous
0 REB500 CU
254 Generic
The group number 75 (0x4B) is used to display busbar differential currents and is
therefore only assigned to the Central Unit (CAA = 0).
