Display Of Busbar Differential Currents - ABB REB500 Communication Protocol Manual

1MRK 511 371-UEN
3.5.5
Communication Protocol Manual, IEC 60870-5-103
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 0 0 0 0
Spontaneous <1>
GEN <254>
Read value of single entry <244>
<0>
{1, 0, 0}
46 H
01 H
Current value <1>
<23>
DATA STRUCTURE
14
1,0
<11> DOUBLE POINT I
NFORMATION WITH
E
AND RROR
1
1,0
0 0 0 0 0
<14>
BINARY TIME
7
1,0
Time stamp (CP56Time2a)

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
1 Spontaneous 0 REB500 CU
The group number 75 (0x4B) is used to display busbar differential currents and is
therefore only assigned to the Central Unit (CAA = 0).
1 0 Type Identification
0 1 Variable Structure Qualifier
Cause Of Transmission
Function type
Information number
Return information identifier
Number of generic data sets
Generic identification
number
Kind of description
DATA TYPE
DATA SIZE
,
NUMBER CONT
T
RANSIENT DATA TYPE
DATA SIZE
,
NUMBER CONT
0 <0 .. 3>
DATA TYPE
DATA SIZE
,
NUMBER CONT
Section 3
IEC 60870-5-103
10 DATA UNIT
SQ=1, SQ_No.= 1 IDENTIFIER
COT
FUN INFORMATI
ON
INF OBJECT
RII
NGD {NO, COUNT, CONT}
Group <46H .. 49H>
Entry <1 .. 255>
KOD
GDD
GDD 1
GID 1
GDD 2
GID 2
FUN
254 Generic
21