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10.4.3 Type 5 files
The type 5 files are dedicated to the service called “peaks logging service”.
This service logs on file the maximum and minim values (peak values) of any of the input or holding
registers.
For any register - whose peak values will be logged
(target register)
a second one can be specified, which
will act as
“reference register”
.
The following detection functions are available :
•
Absolute minimum value of the
target register
(the
reference register
is ignored);
•
Absolute maximum value of the
target register
(the
reference register
is ignored);
•
Absolute minimum value of the
target register
with a
reference register
having positive values;
•
Absolute minimum value of the
target register
with a
reference register
having positive values;
•
Absolute minimum value of the
target register
with a
reference register
having negative values;
•
Absolute minimum value of the
target register
with a
reference register
having negative values;
The use of the
reference register
is particularly useful, as example, for discriminating the peak value
attained by a parameter in the import quadrant (consumption) from the value attained in the export
quadrant (generation). The reference register to be considered to this purpose is always the register
designating the import Active Power.
The report file generated by this service contains a data record for each peak value to be stored.
Each record contains the absolute maximum (or minimum) value of the corresponding
target register
and a
time-stamp of the sampling time. Maximum and minimum values are overwritten when exceeded.
The time stamp format is user configurable on the configuration file.
It is possible to program the configuration file for recording other parameters too on top of
target registers
,
in order to get a broader picture when the peak was detected.
The maximum number of
target registers
supported by the configuration file is approximately ten (it
depends upon the number of internal allocation variables and of external multiple allocation variables.
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