Trend Screen; Figure 46 - Trend Screen - York OPTIVIEW Operation Manual

FORM 160.78-O2
ISSUE DATE: 5/22/2017

FIGURE 46 - 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 Interval
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 pa-
rameters 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 la-
bel 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 trended
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 param-
JOHNSON CONTROLS
SECTION 2 - OPTIVIEW CONTROL CENTER INTRODUCTION

TREND SCREEN

eter, the value will be plotted at the minimum 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
• TRIGGERED
(not applicable to Flash Memory Card version
C.MLM.01.04.xxx and earlier).
When plotting reaches the end of the X-axis, and ONE
SCREEN is selected, trending stops and data is fro-
zen. 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 collection will
stop at the completion of one screen of data similar to
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