JOHNSON CONTROLS
107
SECTION 2 – OPTIVIEW CONTROL CENTER
FORM 160.69-O1
ISSUE DATE: 9/30/2012
2
TREND SCREEN
Overview
As many as six Operator selected parameters (Data
Points) can be plotted in an X/Y graph format. The
X-Axis is scaled per the selected Data Collection In-
terval and displayed in a time of day or elapsed time
format, as selected with the X-axis toggle key. The
Y-Axis is scaled for each parameter per the selected
minimum and maximum value for each parameter.
Analog parameters are scaled in pressure, temperature,
volts, amps, hertz or time. Digital on/off parameters
are scaled as zero (off) and one (on). Only one Y-Axis
label is displayed at a time. The Y-Axis Toggle Key is
used to toggle the Y-Axis labels through the different
parameters. The Y-Axis label that is being displayed
is identified at the top of the graph. For identification,
each plotted parameter and associated Y-Axis labeling
is color coordinated.
The DATA SELECT key is used to display all trend-
ed Data Points simultaneously or select a single Data
Point for display.
The parameters are sampled at the selected Data Col-
lection Interval and plotted using 450 data points
across the X-Axis. If the actual value of the sampled
parameter is less than the Y-Axis label minimum for
that parameter, the value will be plotted at the min-
imum value. Similarly, if the actual value is greater
than the Y-Axis label maximum for that parameter, the
value will be plotted at the maximum value.
There are three types of charts that can be created: ONE
SCREEN, CONTINUOUS or TRIGGERED (not ap-
plicable to Flash Memory Card version C.MLM.01.04.
xxx and earlier). When plotting reaches the end of the
X-axis, if ONE SCREEN is selected, trending stops
and data is frozen. If CONTINUOUS is selected, the
oldest data is dropped from the left-hand side of the
graph at the next collection interval. Thereafter, the
oldest data is dropped from the left hand-side of the
graph at each data collection interval. If TRIGGERED
is selected, data collection can be set to start or stop
based upon the selected TRIGGER ACTION (START
or STOP). If START is selected, data collection will
not begin until the Triggers have been satisfied and any
selected TRIGGER DELAY has elapsed. Data collec-
tion will stop at the completion of one screen of data as
with the ONE SCREEN. If STOP is selected, data col-
lection will not stop until the Triggers have been satis-
fied and any selected TRIGGER DELAY has elapsed.
If a power failure occurs while the trending is running,
the trending is stopped. Upon restoration of power,
the last screen of data that was collected will be dis-
played on the trending screen. The START key must
be pressed to initiate a new trend screen.
00472VIPC
FIGURE 43 -
TREND SCREEN
