Trend Setup Screen; Figure 31 - Trend Setup Screen - York YR Manual

FORM 160.81-O1 (1020)
ISSUE DATE 10/05/2020

FIGURE 31 - TREND SETUP SCREEN

Overview
This screen is used to configure the trending screen.
The parameters to be trended are selected from the
COMMON SLOTS screen or Common Slots Master
list and entered as Slot Numbers for Data Points 1
through 6. The Y-Axis minimum and maximum values
for each parameter are entered as Data Point Min and
Data Point Max for Data Points 1 through 6. The inter-
val at which all the parameters are sampled is selected
as the Data Collection Interval.
Display Only
None
Programmable
Chart Type
Access Level Required: OPERATOR
Selects CONTINUOUS, ONE SCREEN or TRIG-
GERED type of graph.
Collection Interval
Access Level Required: OPERATOR
Selects the interval at which the parameters are sam-
pled. There are 450 data points displayed across the
X-Axis of the graph. Each point represents the instan-
taneous value of the parameter. The user selects the
time interval between these points. This is called the
JOHNSON CONTROLS

TREND SETUP SCREEN

Data Collection Interval, or the interval at which the
parameter is sampled. This interval is programmable
over the range of 1 second to 3600 seconds (1 hour), in
one second increments. The selected interval not only
determines the sample interval, but also the full screen
time display. The full screen time display is a result
of the selected interval in seconds, multiplied by the
450 data points. For example, if the Data Collection
Interval is programmed for 900 seconds, the param-
eter would be sampled every 900 seconds, with the last
112.5 hours (4.7 days) of data viewable on the screen.
Therefore, the selected interval is a compromise be-
tween resolution and full screen time display. Select
the desired Data Collection Interval as follows:
1. Determine the desired time interval (in seconds),
2. Calculate the full screen time display as follows:
3. Decide if the resultant sample interval and full
SECTION 2 - OPTIVIEW™ CONTROL CENTER
between data samples.
• Data collection interval equals full screen
seconds
• Full screen seconds / 60 equals full screen
minutes
• Full screen minutes / 60 equals full screen hours
• Full screen hours / 24 equals full screen days
screen display meet the requirements. If not, se-
lect a different sample interval.
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