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1MRS756445
5.
5.1.
5.2.
5.2.1.
5.2.2.
5.2.2.1.
Name
Type
stVal
BOOLEAN
q
Quality
t
TimeStamp
COM600 series, Version 4.1
Modbus TCP Master (OPC) User's Manual
Technical reference
About this section
This section provides reference information about the following issues:
•
IEC 61850 data modeling
•
Attributes
•
Status codes
IEC 61850 data modeling
General about IEC 61850 data modeling
The relationship between the IEC 61850 data modeling and Modbus OPC Server is
described in this section.
For each data class, there is a table giving a detailed description about the relation between
the Modbus data and IEC 61850 data object attributes and services. The tables also
describe how the data is presented on the OPC Server name space.
The columns in the tables have the following content types:
•
Name specifies the OPC item name of the attribute/service.
•
Type specifies the IEC 61850 type of the attribute.
•
Value/ Value range specifies the allowed values and ranges of the attribute/service.
•
Mandatory/Optional specifies whether the attribute is considered as mandatory or
optional according to the IEC 61850 standard.
•
OPC data types specify the OPC data type used for the OPC item.
Data objects for status information
Single point status (SPS)
Table 5.2.2.1-1 Single point status (SPS) information
Value/ Value
range
TRUE | FALSE
Mandatory
/Optional
M
0x, 1x, 3x, 4x
M
generated by OPC
Server
M
generated by OPC
Server
OPC data types
VT_BOOL
VT_I4
VT_DATE
75
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