Linear Gauge Properties - Display tab

The following table shows options under
Current value
 of the
Display
 tab.
Options
Description
Show current value
Select this check box to show the current value below or above the linear gauge, depending on whether it's vertical or horizontal.
Field length
Select the character length of the current value.
Decimal places
Select the number of digits to show after the decimal point.
Font
,
Size
, and
Color
Select the font type, size, and color for the current value.
Show engineering unit
Select this check box to show the engineering unit of the current value.
Use variable
Select this check box if you plan to use the
Unit
 connection on the
Connections
 tab for the engineering unit.
Font
,
Size
, and
Color
Select the font type, size, and color for the engineering unit.
The following table shows options under
Target
 of the
Display
 tab.
Options
Description
Enable target
Select this check box to show the target value on the linear gauge.
The target value is the desired value that the process aims to achieve. The setpoint is more commonly associated with immediate control actions within a PID system, whereas the target value can be used for a broader goal or benchmark that the process aims to achieve over time. For example, in a ramping process, the target value can be the final temperature you want to achieve after a certain period, such as 600°C. The system will gradually adjust the setpoint to reach this target value.
Use variable
Select this check box if you plan to use the
Target value
,
High deviation
, and
Low deviation
 connections on the
Connections
 tab for the linear gauge's target value.
Target value
Specify the target value. This is only available if
Use variable
 is cleared.
Target color
Select the color for the target value indicator.
High deviation
Specify the high deviation value around the target value. This is only available if
Use variable
 is cleared.
High deviation occurs when the process variable (PV) is above the target value.
High deviation and low deviation define a tolerant range around the target value.
Low deviation
Specify the low deviation value around the target value. This is only available if
Use variable
 is cleared.
Low deviation occurs when the PV is below the target value.
 High deviation and low deviation define a tolerant range around the target value.
Expected range color
Select the color for the expected range between the low and high deviations around the target value.
To enable the setpoint, select
Enable setpoint
.
  • With setpoint enabled, configure the
    Setpoint value
     connection on the
    Connections
     tab. The setpoint uses the same color as the target value indicator.
  • The setpoint is the desired value that you want the PV to reach or maintain. For example, in a PID controller, the setpoint represents the reference or goal for the controlled PV, such as temperature, pressure, or flow rate. The setpoint is used for immediate control actions to maintain a specific value, whereas the target value is used for planning or achieving the final goal for the entire process after a series of adjustments or steps.
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