Configuring a Totalizer Channel

From the left-hand side of the Totalizers screen, select Add Totalizers .

If you are not already in Configuration lock, the Configuration lock screen displays:

Enter a reason if required and then select Confirm . The system configuration is now locked pending the submission of your update and the Configuration Locked icon displays on the status bar.

From the left-hand side of the Totalizers screen, select the Totalizer required:

If you are not already in Configuration lock, the Configuration lock screen displays:

Enter a reason if required and then select Confirm . The system configuration is now locked pending the submission of your update and the Configuration Locked icon displays on the status bar.

Complete the configuration as required:

• Type - Displays the channel type, cannot be updated.

• Descriptor - Defaults to 'Totalizer n' where 'n' is the next number in sequence from the previous Totalizer. Enter a unique name for this Totalizer to identify it if required (maximum characters 40).

  Note - This is not case sensitive, for example, 'AbC' is regarded as identical to 'abc '.

• Input - Select the channel to total from the list of available channels:

  

  See Linking a Channel as an Input for details.
  Tip - The available list consists of the channels configured on your system so is different from the list in this example.

• Time unit - Defaults to Hours, select the appropriate time unit for the input channel from the available list, for example, if the input channel is in kg/s, then select Seconds.

• Total Limit Action - Select the behavior required when this Totalizer reaches the specified Total Max value:

  • Rollover - Selected by default, output of the Totalizer rolls over when it exceeds the specified Total Max value and triggers an overflow alarm (if configured).

  • Unbounded - Output of the Totalizer is unlimited.

  • Total Max - Defaults to 999999999, only displays if Rollover is selected in Total Limit Action, enter a value to trigger an overflow alarm (if configured).

  • Scaling Factor - Defaults to one, enter the value to multiply the input channel by to increase or decrease the signal.

  • Low Cutoff - Defaults to zero, enter a threshold value to stop the Totalizer if the input signal drops below it.

  • High Cutoff - Defaults to 999999, enter a threshold value to stop the Totalizer if the input signal rises above it.

  • Default - Where available, defaults to zero. Enter a value to use when the input signal exceeds the High Cutoff value.

  • Preset Value - Defaults to zero Unit, enter a base level value to start the Totalizer from.

    Note - This value must be higher than the Low Cutoff value.

From the left-hand side of the Totalizers screen, select the Totalizer required. The Chart and presentation settings section displays on the right-hand side:

If you are not already in Configuration lock, the Configuration lock screen displays:

Enter a reason if required and then select Confirm . The system configuration is now locked pending the submission of your update and the Configuration Locked icon displays on the status bar.

From Chart and presentation settings, select Expand if it does not expand automatically and complete as required:

• General Settings:

  

  Complete the following as required:

  • Units - Enter an engineering unit, for example, °C, psi, Volts, up to a maximum of six characters. To enter special characters, see How do I enter special characters?.

    Tip - The unit displays with the channel value.

  • Number Format - Select either:

    • Numeric - Displays numbers in a decimal format, for example, 12345.6789 displays as 12,345.6789.

    • Scientific - Displays numbers in scientific notation, useful for very large or very small numbers. Numbers display as a coefficient multiplied by 10 raised to the power, for example, 12345.6789 displays as 1.23456789E+4.

  • Decimal Places - Enter the value, or use the Plus or Minus to set the decimal place (0 to 6).

  • Color - Select to choose one of the 56 available colors:

    

• Scale & Zone Settings:

  

  To set the chart scale and zoning for this channel:

  • Scale Enable - Tick to enable scale configuration and specify the scale type and the number of divisions required:

    • Scale Type ( available only when Scale Enable is enabled) - Select one of the following options:

      • Logarithmic - Divisions are displayed using a logarithmic scale. This option is suitable for analyzing data spanning multiple orders of magnitude.

      • Linear - Divisions are displayed at equal intervals. This option is ideal for displaying uniformly distributed data:

        • Scale Division Major ( available only when Scale Type is Linear) - Enter a value, or use the Plus or Minus to set the major divisions to be included on the chart (valid range 1 to 20).

        • Scale Division Minor (available only when Scale Type is Linear) - Enter a value, or use the Plus or Minus to set the minor divisions to be included on the chart (valid range 1 to 20).

          Note - Scale divisions have no impact on a chart grid, they are only for scale. The grid on the chart is defined by the division settings on the group, see Configuring Groups Settings for details.

  • Scale maximum (Unit) - Enter a value, or use the Plus or Minus to set the upper limit of the scale's range.

  • Scale minimum (Unit) - Enter a value, or use the Plus or Minus to set the lower limit of the scale's range.

  • Zone maximum (%) - Enter a value, or use the Plus or Minus to set the percentage offset for the upper limit of the scale and trendline relative to the top of the chart (valid range 5 to 100).

  • Zone minimum (%) - Enter a value, or use the Plus or Minus to set the percentage offset for the lower limit of the scale and trendline relative to the bottom of the chart (valid range 0 to 95).

    Note - The minimum value must be less than the maximum value by 5 or more.
    Tip - The Zone settings offset a scale and its associated trendline relative to the chart grid. This is useful when displaying multiple trends with similar value ranges, which would otherwise overlap and become difficult to distinguish. For example, several digital trends switching between 0 and 1 can overlap, making them difficult to distinguish unless each is defined a different Zone.