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1MRK 511 451-UEN Rev. C
Table 30: Directory entry for GIN 0x4B (xx)
COD
<10> Description
<1> Current value
<9> Unit
<6> Factor
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:
Attribute
OV Overflow
ER Error flag
RES Reserved
MVAL
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:
0
0
1
0
Read value of single entry <244>
Table continues on next page
Distributed busbar protection REB500
Communication protocol manual IEC 60870-5-103
Data type
<1> os8ascii
<23> data
structure
<12>
Measured
variable with
quality
descriptor
<14> binary
time
<1> os8ascii
<6> I
COD Current Value
Description
This Bit is set to <1> whenever an overflow occurs or the
measurement is not assigned. It is normally therefore set to <0>.
BBP (Busbar protection) This Bit indicates whether a measurement is
valid or not (measurement valid <0>, measurement invalid <1>).
Spare for future use.
Contains the actual measurement in fixed decimal point format.
TYPE IDENTIFICATION: Generic data
0
0
1
0
1
0
0
0
0
0
0
1
Spontaneous <1>
REB500 CU
GEN <254>
<0>
{1, 0, 0}
4B H
01 H
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Length Number
Value / Significance
3
1
BBI, example
2
1
(Includes the following two
definitions)
2
3,4
Field with 3 / 4 measurements CP16
{OV,ER,RES,MVAL}
7
1
Time stamp (CP56Time2a)
1
1
A
4
1
32 Bit integer
Type Identification
Variable Structure
Qualifier
Cause Of Transmission
Common Address of
ASDU
Function type
Information number
Return information
identifier
Number of generic data
sets
Generic identification
number
10
DATA UNIT
IDENTIFIER
SQ=1,
SQ_No.= 1
COT
<0>
FUN
INFORMATION
OBJECT
INF
RII
NGD {NO, COUNT, CONT}
Group
Entry <1 .. 32>
Section 4
IEC 60870-5-103
23
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