Setting Up I/NET Seven Trends
Problems configuring Trend Data
I/NET displays this window when you select Add Trend, Add Cell, or Modify from the Seven Trends Definitions window. You must define the following information:
Trend Definition only
- Select the desired point from the Point Selection dialog. Only one point may be selected for a trend definition. This field cannot be edited once the trend definition is saved. This field is not available for cell definitions.
Note: You may click the ... button to return to the Point Selection dialog at any time during a new trend definition. However, once the trend definition is saved, you cannot change the selected point.
- Enter a unique Name for this trend or cell definition, up to 30 characters. The default name for trends is in the format Point Name -- --Trend Type if you are connected to the controller, and Point Address -- Trend Type if you are not connected. The default name for cells is in the format Cell Number -- Trend Type.
Note: If you do not enter a name, the default name will change automatically with the point (or cell number) and trend type selection when you are creating a new trend. You may change the name of a trend or cell definition at any time without loss of data.
- Choose a Type from the drop-down list. This field cannot be edited once the definition is saved.
Discrete Sample — Store the discrete state of a point at regular sample intervals. The point can be a DI, DA, DM, DC, or DO point defined with a TR extension.
Analog Sample — Store the analog value of a point at regular sample intervals. The point can be an AI, AO, GI, GO, or PI point defined with a TR extension.
Runtime — Store the daily runtime minutes for a point or points. The points can be DI, DC, or DO points defined with an RT extension.
Consumption — Store the daily-consumed value of an accumulator point or points. The points must be PI points defined with a CN extension.
Demand — Store the KWH, Peak KW, and time of Peak KW values on a daily basis for a particular demand meter. The point must be a PI point defined with a DC extension.
Override — Store individual KWH values, shared KWH values, and override runtime on a daily basis for a specific zone of a Model 7750 Building Manager. The point can be a DC or DO point defined with an OB extension.
- Define Transient Duration in days. The trend can be configured to automatically discard the oldest trend data after a time period you specify (1 to 45 days).
Note: If you wish to archive Seven Trends data, the transient duration must be set to zero (0), indicating that the data should not be discarded. Only samples with a transient duration of zero can be archived.
- Enter a Cell Number (1–1023). The cell number must be greater than zero (0) in order for Seven Trends to store sample information. This field is provided for backward-compatibility with older versions of I/NET, and can be used to group samples in reports.
If you are creating a new cell definition, this field can be used to auto generate trend definitions (refer to Using Cells to Generate Trend Definitions for more information). This field cannot be changed once the cell definition is saved. Otherwise, this field is not used in I/NET Seven and can be any value.
Note: For manually defined trends, the cell number in the DCU editor does not need to match the cell number for the trend definition. The cell number in the trend definition is the one that will appear on reports.
- Select OK to save your changes. The system returns you to the Seven Trends Definitions window.