CatNet Systems CH-1 Help

Trends

Trends automatically record point values at specified intervals to allow for later viewing. Both a graphical line chart and a tabular text view are available.

Chart Tab

Depending on the way it is configured, the chart tab displays either one or two separate charts. The upper chart normally displays analog values such as temperatures. The lower chart displays digital (On/Off) values, and values with low, small ranges such as equipment modes (Off/Heating/Cooling) or status (Off/On/Auto).

There is a divider bar between the two charts that may be used to resize the charts.

The left side of a chart shows the value scale. Along the bottom of a chart is the time scale. Both scales are automatically adjusted to fit the data currently dipsplayed.

In the background is a grid to show where the value and time scales intersect. Hover the mouse over the intersection of a chart line and a grid line to display information about the value at that time.

Toolbar

- Export trend data to a .CSV file suitable for viewing in Excel or other spreadsheet.

- Select the start of the trend data to be viewed. The amount of data shown will depend on the interval at which the data is recorded.

- Show or hide lines on the chart. This can be useful when some lines are obscuring others.

- Scroll back one screen of data.

- Scroll forward one screen of data.

Data Tab

The data grid displays the same data as the chart, but in a tabular text format. The first column is the date/time of the reading. Each point is then listed in order, from left to right.

Any of the column headers may be clicked to sort the data by that field. Clicking the header a second time will reverse the sort order.

If there is more data than can fit on the screen, a scroll bar will appear to allow scrolling through the data. A mouse wheel may also be used to scroll.

Points Tab

The Points tab is used to configure the trend. Up to six point may be specified for a trend.

Points Column

Drag a point from the device tree and drop it in one of the slots. Dropping a point on a slot already in use will replace the old point with the new point.

Changing or deleting points will erase any previously recorded data for that point that is stored with this chart. The recorded data for the same point on other charts will not be affected.

Right-click a slot to clear the point assigned to that slot, or to clear all points from all slots.

Chart Selection Column

Points may be forced to appear in either the upper or lower chart. Select "Auto" to have the trend automatically decide which chart it should appear in based on the values of the data.

Color Selection Column

Each point can have a specific color assigned to it. Click a color box to select a new color.

Recording Interval Selection

Click the drop-down list to select a recording interval. The list displays the recording interval as well as the time span that will be saved at that interval. When the recording limit is reached, older data is replaced with new data.