Table 85: Programmable
Button Access Description
Data Point Max (1-6) Operator
This is only displayed if the associated slot number is not 0. This is the
maximum value displayed for the y-axis. Selecting a parameter for a data
point sets this to the default value, which is the highest value allowed for that
parameter. It can be changed to a value that provides a more appropriate
resolution for the parameter being monitored.
To change, use the select button as described in Select and enter the new
value. The value must always be set to a value greater than the data point
min. Otherwise, a red graph appears on the trend screen with the words
Trend max must be > trend min. There are 20 y-axis divisions. If a
minimum to maximum span is selected that is not evenly divided by 20,
the program automatically selects the next higher maximum value that
makes the span evenly divided by 20. For example, if 0.0 is selected as the
minimum and 69.0 is selected as the maximum, the program inserts 70.0 as
the maximum value. If the parameter selected for this data point is a digital
type (on/off), this value must be set to 1, which indicates the on state.
Collection Interval Operator
Selects the interval at which the parameters are sampled. There are 450
data points displayed across the x-axis of the graph. Each point represents
the instantaneous value of the parameter. You can select the time interval
between these points. This is called the data collection interval, or the
interval at which the parameter is sampled. This interval is programmable
over the range of 1 s to 3,600 s (1 h), in 1 s increments. The selected interval
determines the sample interval and 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 s, the parameter is sampled every 900 s, with the last
112.5 h (4.7 days) of data viewable on the screen. As a result, the selected
interval is a compromise between resolution and full screen time display.
To select your preferred data collection interval, complete the following
steps:
1. Determine the preferred time interval (in seconds) between data
samples.
2. Calculate the full screen time display as follows:
- 450 x Data Collection Interval = full screen seconds
- Full screen seconds / 60 = full screen minutes
- Full screen minutes / 60 = full screen hours
- Full screen hours / 24 = full screen days
3. Decide if the resultant sample interval and full screen display meet the
requirements. If not, select a different sample interval.
Select Operator
This allows you to enter the slot numbers and the minimum and maximum
y-axis values of each parameter to be trended. Press this button to place a
yellow box around the data point 1 slot number. Use the ▲ and ▼ buttons
to place the box around the value of data points 1 through 6 to be changed.
With the value selected, press the enter ✓ button. A dialog box is displayed
permitting data entry.
Table 86: Navigation
Button Description
Home Returns to the home screen.
Trending Returns to the trending screen.
Slot Numbers Displays a subscreen that lists the slot numbers of the most commonly monitored
parameters. The preferred parameters to be plotted are selected from this screen.
Triggers Displays the advanced trend setup screen, where the start and stop triggers can be setup. It
is only displayed if triggered is selected as chart type.
85
YMC
2
Mod B with OptiView Control Center
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