Table 30: Directory entry for GIN 0x4B (xx)
COD Data type Length Number Value / Significance
<10> Description <1> os8ascii 3 1 BBI, example
<1> Current value <23> data
structure
2 1 (Includes the following two
definitions)
<12>
Measured
variable with
quality
descriptor
2 3,4 Field with 3 / 4 measurements CP16
{OV,ER,RES,MVAL}
<14> binary
time
7 1 Time stamp (CP56Time2a)
<9> Unit <1> os8ascii 1 1 A
<6> Factor <6> I 4 1 32 Bit integer
The description has a maximum length of 16 characters.
The current value is a field with three (L1, L2, L3) or four (L1, L2, L3, L0) measurements and the
associated time stamp. The effective number of measurements is determined by how the
REB500 is configured.
Table 31: COD Current Value
Attribute Description
OV Overflow This Bit is set to <1> whenever an overflow occurs or the
measurement is not assigned. It is normally therefore set to <0>.
ER Error flag BBP (Busbar protection) This Bit indicates whether a measurement is
valid or not (measurement valid <0>, measurement invalid <1>).
RES Reserved Spare for future use.
MVAL Contains the actual measurement in fixed decimal point format.
The Factor is a 32 Bit integer for scaling to the original value.
The following table gives an example of the ASDU 10 ‘Generic Data’ that is transferred
spontaneously for displaying the differential currents of a given bus zone.
Table 32: TYPE IDENTIFICATION: Generic data
0 0 0 0 1 0 1 0 Type Identification 10 DATA UNIT
IDENTIFIER
1 0 0 0 0 0 0 1
Variable Structure
Qualifier
SQ=1,
SQ_No.= 1
Spontaneous <1>
Cause Of Transmission COT
REB500 CU
Common Address of
ASDU
<0>
GEN <254>
Function type FUN INFORMATION
Read value of single entry <244>
Information number INF
OBJECT
<0>
Return information
identifier
RII
{1, 0, 0}
Number of generic data
sets
NGD {NO, COUNT, CONT}
4B H Generic identification
number
Group
Table continues on next page
1MRK 511 451-UEN B Section 4
IEC60870-5-103
Distributed busbar protection REB500 25
Communication protocol manual IEC60870-5-103
© Copyright 2019 ABB. All rights reserved
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