Process variable
Production process variables
Overview
The Process Variable represents the measured value or parameter of a particular part of a process which is being monitored and controlled.Usually, a process variable is linked to a PLC tag, where actual values are being referenced.
Navigation
Navigation: Settings > Configuration > Process Variable
Creating a new Process Variable
On the table click Actions > Create; you will be presented with a pop-up.
Fields
Name | Description |
---|---|
Name * | the text name of the process variable |
Uom | this will open a drop-down selection; the value entry comes from the Unit of measure configuration. |
Description | a text description of the process variable. |
Constraint Min | the minimum numeric value, that prevents the submission of an activity, if not met. Usually, this is below the Lower Limit. |
Constraint Max | the maximum numeric value, that prevents the submission of an activity, if exceeded. Usually, this is above the Upper Limit. |
Display Order | defines the order in which the entry will be displayed in the selection |
Decimals | represents the precision of the number entered. If this value is set, TilliT will round the number entered to the nearest decimal place. |
Target | the optimum numeric value which, if controlled, can guarantee compliance with the process operation. If both Upper Limit and Lower Limit are left blank, you must meet the Target precisely. |
Upper Limit | the the maximum numeric value of a measured asset variable where, if exceeded, will have a potential effect on the process operation. |
Lower Limit | the minimum numeric value of a measured asset variable where, if not met, will have a potential effect on the process operation. |
Click the Save and close** ** button to finalise.
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