ABB 620 Series - Class 2 Data Measurands

2.4 Class 2 data measurands
Class 2 data measurands use ASDU type 9, function type 10 and information
number 236 for frame 6 and 237 for frame 7.
StartStart LengthLength Cntrl Addr EndCsumLink user data
ASDU VSQ COT Addr FUN INF Measurand data
Meas value ix1
68H
09
16H
10 236
68H
Meas value ix2 Meas value ix3 Meas value ix4 Meas value ixN
GUID-7FE191AF-F805-4C25-ACA1-7296D59448D7 V1 EN
Figure 1: Class 2 frame response in the predefined private Class 2 frames,
numbers 6 or 7
The data value indexes, named ix in the Class 2 point list table, runs from 1 to N.
Each measurand data value occupies two data octets. The indexes in the Class 2
point list table are necessarily not presented in incremental order. Indexes are
common for frame numbers 6 and 7. Indexes containing an asterisk (*) are only
relevant for frame number 7. Index 999 means that objects are available but not pre-
mapped to any Class 2 frame.
The user can freely compose an own private Class 2 frame using PCM600. The
Function Type and the Information Number for this user-definable Class 2 frame
can be configured through the setting parameters. Default values are FUN = 10,
INF = 230.
Table 106: Explanations of the class 2 data measurands table columns
Column name
Description
IEC 61850
name
Original IED data object identification. Described in the IEC 61850 format as
Logical Device.Logical Node and thereafter .Data Object.Data Attribute. Logical
Node is the same as the application function block name.
Description Short description of the signal. See the technical manual for more information.
Scale Absolute IED object value that corresponds to the IEC 60870-5-103 maximum
value.
ix Index, that is location of the measurement value within the class 2 frame.
1MRS757657 A Section 2
IEC 60870-5-103 data mappings
REM620 51
Point List Manual