Checking the Fraction Collection Status on the Control PanelCollecting Fractions
Checking the Fraction Collection Status on the Control Panel
The Fraction Collection driver supports various properties that allow you to check the fraction collection status on a Control Panel. These properties are read-only. They are available independently of the installed Fraction Collector.
On the control panel, create display elements indicating the status of the desired parameter. You can use a Color Box, String Display, Gauge Indicator, or Lamp. (For more information, refer to Controlling Devices from the Control Panel 
Modifying a Control Panel and the following topics.)
The tables below list the properties in the order in which they appear in the dialog box. (For information about the parameters for active fraction collection control, refer to Editing Signal-Dependent Fraction Collection Parameters and Editing Signal-Independent Fraction Collection Parameters.)
Properties for the single channels
These properties are available on the Link tab page of the Properties (context menu) for the corresponding control if the associated DetectionChannelN is selected as Object.
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Property |
Description |
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Curve |
Indicates the last signal curve in [Signal]/s^2 evaluated by the Fraction Collection driver for peak detection. |
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PeakDetectCode |
Use this property to have Chromeleon display the peak detection status: |
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Unknown (= 0) |
The status is not defined. |
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Ready for |
The driver waits for the peak start, i.e., waits until the peak start conditions are fulfilled. |
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Start is |
A peak start was detected. |
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Ready for Shoulder Up |
A Peak Shoulder may have been detected at the fronting edge of the peak. However, this is not yet clearly detected. Chromeleon supports this parameter only for the Extended Fraction Collection license. |
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Max is |
A peak maximum was detected. |
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Ready for Shoulder |
A peak shoulder may have been detected at the tailing edge of the peak. However, this is not yet clearly detected. Chromeleon supports this parameter only for the Extended Fraction Collection license. |
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Waiting for Manual Peak End (= 6) |
The Manual Peak Start command was performed. Thus, automatic peak detection is disabled. The driver waits for the Manual Peak End command. |
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PeakEndTime |
Indicates the last retention times evaluated by the Fraction Collection driver for detecting a peak start, peak maximum, or peak end. |
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RetentionTime |
Indicates the retention time in minutes evaluated by the Fraction Collection driver for peak detection. |
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Signal |
Indicates the last signal value evaluated by the Fraction Collection driver for peak detection. |
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Slope |
Indicates the last slope in [Signal]/s evaluated by the Fraction Collection driver for peak detection. |
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Properties for the Fraction Collection Driver
Tip:
These properties are available if the selected Object is FractionCollection.
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Property |
Description |
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FracEndDetected |
Set to Yes when a fraction start is detected. When the fraction end is detected, the property is reset to No. |
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FracStartDetected
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Set to Yes when a fraction start is detected. When the fraction end is detected, the property is reset to No. |
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FractionOn |
Set to Yes during fraction collection. |
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FractionTubeCount |
Number of filled tubes in the current fraction. |
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FracTubeChange |
Set to Yes when a filled tube is detected. When a filled tube is not detected, the property is automatically reset to No. |
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TubeFilling |
Volume collected in the current tube. |
For an overview of the fraction collection topics, refer to Collecting Fractions.