4. Configuration
68
Configurations
Description
Default
Possibilities
Variable Name
Symbolic variable that stores
the value of the internal point
-
BOOL, WORD, DWORD, LWORD, INT,
DINT, LINT, UINT, UDINT, ULINT, REAL,
LREAL or DBP.
The variable can be simple, array or array
element and may be in structures.
Quality
Symbolic variable that stores
the quality of the internal point
represented in "Variable Name"
-
Variables of QUALITY type
(LibRtuStandard), which can be simple,
array or element array and may be in
structures.
Table 4-6 Internal Points Settings
The following figure describes an example of an internal point configuration:
Figure 4-4. Internal Point Configuration Example
Quality Conversions
The quality of an internal point is an information that indicates the level of confidence that one can
have on the value that is stored at that point. The quality can tell, for example, if the stored value is
out of range, or if it is valid but unreliable.
The IEC 61850, DNP3 and IEC104 standards have their own formats for representing the quality
information of a point. The Hadron Xtorm Series, in turn, has its own quality format, called Internal
Quality (very similar to IEC 61850). This format is defined by the QUALITY type (LibRtuStandard
library) and is used internally for storing the quality, allowing conversions between protocols without
loss of information.
When performing the mapping of a single communication point between two drivers, the quality
conversion is automatically performed in two stages. For example, if a communication point is
mapped from a DNP3 Client driver to an IEC 61850 Server driver, first the quality is converted from
the DNP3 format to the internal format (and internally stored in the CPU), and then is converted from
the internal format to the IEC 61850 format.
The following tables set out the proprietary format conversion of the protocols to the internal format.
If it is necessary to check the conversion between protocols, the user must analyze them in two
stages: check each table to the internal format and then make the correlation between them.
