ABB Relion REB500, Communication Protocol Manual

Page: 30 / 34

Section 3
1MRK 511 371-UEN
IEC 60870-5-103
22 Communication Protocol Manual, IEC 60870-5-103
Distributed busbar protection REB500
Table 29 Directory entry for GIN 0x4B00 (header)
COD Data type Length Num
ber Value / Significance
<10> Description <1>
OS
8
ASCII
21 1 "Differential currents”
<1> Current value <3> UI 1 1 Number of valid entries
The number of valid entries corresponds to the number of bus-bar zones and thus
limited to the range [1…32].
Each of the entries 1…32 in the group relates to a given busbar zone.
Table 30 Directory entry for GIN 0x4B (xx)
COD Data type Length Num
ber 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.