ABB ControlIT 53MC5000 Instruction Manual page 174

Table 5-12. Trend Modules
Title
Trend This parameter specifies the sampling method used to
Mode record the selected datapoint. The time between
successive samples for an individual trend is one
second regardless of the Trend Rate (TRR - B355,
etc.) value. The recorded value is a representation of
all the samples within the specified recorded rate time
interval. The available representations are as follows:
0 - INST.
1 - AVG.
2 - MAX.
3 - MIN.
0 = Instantaneous value. (If TRR = 5, then samples at
every 5th second are recorded in the trend.)
1 = Average value. (If TRR = 5, then 5 samples are
accumulated for 5 seconds and averaged. The
average value is recorded in the trend.)
2 = Maximum value. (If TRR = 5, then each sample is
tested to be greater than every second for 5 seconds
and the result will be the largest value, which is
recorded in the trend.)
3 = Minimum value. (If TRR = 5, then each sample is
tested to be less than every second for 5 seconds and
the result will be the lowest value, which is recorded in
the trend.)
Trend This parameter specifies the displayed height assigned
Height to a full scale sampled value, which determines
resolution and size of the trend display. When
controlled by a CON module, this value is fixed at 50 .
Trend These two parameters set the upper and lower trend
Zero display values in engineering units. The lowest value
is displayed as 0 and the highest value corresponds to
the height of the trend display.
Definition Atom 0 1 2 3
TRM B356 B359 B362 B365 B368 B371 B374 B377
(0-7)
TRH B357 B360 B363 B366 B369 B372 B375 B378
(0-7)
TRZ C302 C304 C306 C308 C310 C312 C314 C316
(0-7)
4 5 6 7 Default
0
47
0