Ordered Collection Properties

Negative Amount Allowed

When this parameter is checked, negative amount is allowed on the tracking materials inside this tracker process unit. This means that the material does not automatically exit the tracker process unit when the amount reaches zero. This feature is typically used to handle integrating mass balance problems because of inaccuracies in the signals or inaccuracies in manual registrations.

Adjust amount

This parameter is used to enable a functionality that allows the contained amount of the TPU to be adjusted, and this functionality may be used for calibration purposes. When the total amount of the TPU is adjusted, the single amount of every contained tracking material is adjusted proportionally so that the total amount of contained material fits the specified value. The options available are:

  • None. Amount adjusting is not allowed
  • Signal based. Amount adjusting may be performed by the use of port signals. Two ports named CTR Adjust Amount Value and CTR Adjust Amount Signal will appear on the TPU. The CTR Adjust Amount Value port provides the new amount value, and the CTR Adjust Amount Signal port provides trigger signal indicating that the amount shall be adjusted.
  • Message based. Amount adjusting from the portal is enabled. 
  • Both. Both port based and portal based amount adjusting is enabled.

Mixing material

This parameter enables mixing of all the material entities contained in the tracker process unit. This functionality will create one new tracking material out of all the contained tracking materials in the TPU. The new aggregated tracking material is related to the previous tracking material entities by the Genealogy table. Hence, this is functionality is similar to the make phase in the tracker process unit. The following options are available:

  • None. The mixing functionality is disabled.
  • Event based. Mixing is enabled via port signals. A new port digital port named CTR Mixing signal will occur on the TPU. When the value of this port is true, material inside the TPU will be mixed.
  • Continuously. Material of the material inside the TPU is performed continuously.

Mixing factor

The mixing factor concept are invented in order to achieve a stepless mixture between pure FIFO behavior and ideal mixing behavior. The mixing factor can be between 0 and 100. 0 means no mixing and 100 means full mixing. Opposed to the Mixing material parameter, which is used to perform a one time instantaneous mixing of all the material, the mixing factor is used to perform a mixing of material that leaves the tracker process unit through an Amount MIX output port.

Minimum amount

Material with amount less than a specific limit, specified by this property, shall be a part of the next material transaction completely, regardless of the order. The materials that satisfied this condition will be prioritized higher than all the other materials for being moved out of the tracker process unit. If the sum of the material amount of all tracking materials that have amount below the limit is greater than the transactional amount, a normal FIFO/LIFO behavior is applied.

The reason for using the minimum amount concept is to avoid infinite material traces in cases with mixing behavior.

Clean port

Checking this property will enable a clean port on the tracker process unit. This is a digital port that is used to trigger the clean command, which will remove all material that has zero amount from the tracker process unit. (Material with amount greater that zero will be left unchanged in the tracker process unit) The actual tracking material will be removed from the tracker application and the exit time is written to the database. 

Detect contamination

If true, all tracking materials which have been inside this TPU since the last clean operation, will be added to the tracker materials genealogy, thus enabling contamination detection.