frsModules_HighPerf dynamo reference

The combination bar graph indicates the relative values of PV, SP, SP_WRK, and alarm limits (when the corresponding alarm is enabled), based on the defined range. By default, the range used is PV_SCALE (OUT_SCALE for AI blocks). The SP and SP_WRK indicators are hidden when the function block definition is the AI block.

Optionally, a user-defined scale can be configured. The user-defined scale can be defined as values, such as low range = 20 and high range = 80 or can be defined by paths, such as LO_LIM and HI_LIM. When paths are configured for the range, the range will dynamically adjust in runtime based on the current value of those paths.

Operators are provided indication that the dynamo is based on user-defined scales. When user-defined scales have been configured for the dynamo, it is indicated with perpendicular lines shown at the ends of the combination bar graph. Perpendicular lines are shown at both ends of the bar graph to indicate that a partial range is defined.

The combination bar graph graphically shows the following key information:

• Comparison of PV and SP - Shape recognition is used to aid detection. When PV is equal to SP, the PV bar touches the perpendicular SP bar, forming a 'T'. If the PV is above SP, a 't' is shown. Knowing these shapes allows the operator scan a display and quickly know how PV and SP compare.

• Comparison of PV and SP, when operation is limited to a small portion of the full range - the user-defined scaling can be defined such that even a small differences between PV and SP is very visible within the range defined. For example, a temperature bar graph may only show the range of 740 - 755, because this is the range the temperature is normally operated within. The full PV_SCALE may be 0 to 800.

• Comparison of PV and SP to SP_WRK - When SP_WRK is different from SP, it is shown on the bar graph. This allows operators to recognize the situation where PV is not equal to SP because SP_WRK is active and the currently displayed SP value is not being used by the module.

• PV and SP relative range - Operators are shown PV and SP are at the appropriate place in range. By default, the full 0 - 100% PV_Scale (OUT_SCALE for AI) range is shown in the graph. For process values such as temperature or pH where operation is required within a small percentage of the overall range, the bar graph can be defined with a partial range.

• PV and SP value relative to alarm limits - HI, HIHI, LO and LOLO Alarm limits are shown on the bar graph. If the PV or SP is near an alarm limit, the operator can determine this from the combination bar graph. The indication of these alarm locations is shown subtly (such as in grays), providing alarm limit information without being distracting or creating excessive visual clutter.

The Toggle Display Tag toolbar button appears on the toolbar of all monitors and the operator action applies to all monitors. That is, the operator cannot choose to show the module name on one monitor and the module description on another.

The tag's text color is based on the Text Background 4 color in the Theme_Colors_FP_DD table.

• For all dynamos in the frsModules_HighPerf dynamo set, clicking on the hotspot opens the module's defined faceplate.
• For dynamos configured for level 1 and level 2 displays, hovering on the hotspot displays an information hover window that provides more information about the dynamo.

A selection box around the dynamo indicates that the dynamo is currently selected. Dynamos are selected whenever the dynamo is clicked or its faceplate is active.

A horizontal bar that presents PID, AI or ALM information graphically relative to defined normal ranges of PV_SCALE (OUT_SCALE for AI). This graph is useful when it is important whether values are in the defined normal range. The normalized bar graph divides PV_SCALE (OUT_SCALE for AI) into three sections. The three sections are always shown as the same size, regardless of the percentage of the scale they represent. Thus, if several normalized bar graphs are stacked vertically, the normal sections line up, facilitating pattern recognition for value comparisons based on the defined normal ranges.

By default, the low normal value is defined by the block LO_LIM parameter and the high normal value is defined by the block HI_LIM parameter. Changing the alarm limit parameters adjusts the percentage of the scale in the three sections during run time. Optionally, user-defined parameters can be configured for the low and high normal values.

The normalized bar graph divides PV_SCALE (OUT_SCALE for AI) into three sections as defined by the High and Low Normal Values. For example, if the full scale is defined as 0 to 100, with LO_LIM equal to 10 and HI_LIM equal to 70, the three sections would be defined as 0 - 10, 10 - 70 and 70 - 100. PV and SP are positioned linearly within each section. Therefore, if PV was equal to 5, it would be shown at the midpoint of the low normal value section. If PV changed to 11, it would be shown on the left side of the normal value section. If PV changed to 40, it would be positioned at the midpoint of the normal section.

When additional information is needed with a normalized bar graph, a companion dynamo may be used. The SP indicator is hidden when the function block definition is the AI block.

The normalized bar graph graphically shows the following key information:

• Comparison of PV and SP - Shape recognition is used to aid detection. When PV is equal to SP, the PV bar touches the perpendicular SP bar, forming a 'T'. If the PV is above SP, a 't' is shown. Knowing these shapes allows the operator scan a display and quickly know how PV and SP compare.

• Comparison of PV and SP - based on current defined operating ranges. This graph can be particularly useful when the portion of the range defined as normal often changes for a value and so it is less likely that the operator will know where the values should be relative to percent in range. Operators can scan the graph knowing that the values outside the normal operating range are consistently represented (that is, not in the fixed, normal section).

• Monitoring of PV and SP when the normal operating range is a small percentage of the overall range - Since the normalized operating section is always shown the same size, the normalized bar graph can be used to show a small normal operating region as a large portion of the graph. For process values such as temperature or pH where operation is required within a small percentage of the overall range, the bar graph Normal Operating Region can be defined such that the operator has improved visibility to PV and SP movement within this region.

Visualizes the good range defined for the module parameter. The range is configured with a low value and a high value, each of which may be linked to parameters in the DeltaV System or given static values. The operating range may optionally be added to the HP_HorizAnalog, HP_VertAnalog, HP_Radar, HP_HorizMultiPoint, and HP_VertMultiPoint dynamos.

The data values for PV and SP of the selected block. Up to six (6) right-justified digits including decimal point and minus sign if applicable. These fields are formatted based on the F_DECPT field of the PID block’s PV_SCALE. The text color is the same for both PV and SP and is based on the named Data Value color in the Theme_Colors table.

The font size of the data fields can be modified by adding a script that assigns a new value to the gn_dynamoFontSize global variable. The visibility of the data fields can be turned off by adding a script that assigns a new value to the gb_dynamoNumVisible global variable. The font size and visibility of the data fields can also be controlled at run time by the toolbar button: Toggle Display Tag.

The distance between PV and SP on a bar graph always represents the same amount of deviation from that SP, whether PV is above or below SP. Thus a 2% deviation between PV and SP places PV at the same location on the bar graph, whether PV is above, or below SP. Since SP is fixed in the middle of the bar graph, it is the current SP value that defines the current range of PV shown in the bar graph.

By default, the maximum configured bar graph range uses PV_SCALE. In runtime, the bar graph always uses this maximum. Since the SP value is always in the middle of the graph, when SP is set at 50% of range, the PV diamond at the end of the bar would indicate that PV was at 0 or 100% of PV_SCALE. If SP is then set to 25% of PV_SCALE, the PV diamond at the end of the bar graph would indicate that PV was at -25% or 75% of PV_SCALE. Note that, in this case, PV would be limited to 0 and the diamond would never reach the bottom of the bar graph range of -25%, because the PV value cannot be outside of the PV_SCALE range.

Optionally, you can have a user-defined maximum configured bar graph range. The user-defined percent of scale can be defined as either a number or a path that resolves to percent . If the value is set to 10, it equates to ±5% of EU range. So the maximum bar graph range would have zero scale at SP minus 5% of EU range and full scale on the bar graph is SP plus 5% of EU range for a total of 10%. When using a path, limit the value to between 0 and 100. When a path is configured for the range, the range will dynamically adjust in runtime based on the current value of that path.

Note

When setting the user-defined scale high and low limits to a parameter path, validity of those values cannot be checked.

The deviation bar graph graphically shows the following key information:

• Comparison of PV and SP - Shape recognition is used to aid detection of PV deviations. When PV equals SP, only the perpendicular SP line is visible. The greater the deviation, the more visible the PV diamond becomes, starting as an arrow and growing into the diamond shape. Knowing these shapes allows the operator to scan a display and quickly know how PV and SP compare.

• Pattern recognition to detect the  significance of any PV deviations from SP is possible, when multiple deviation bar graphs are viewed together, since the SP indication is fixed.

• Comparison of PV and SP, when small deviations are important - the user-defined scaling can be defined such that even a small deviation between PV and SP is very visible and provide this information for any SP value.

• Operators are shown PV and SP at the appropriate place in range. By default, the full 0 - 100% PV_Scale range is shown in the graph. For process values such as temperature or pH where operation is required within a small percentage of the overall range, the bar graph can be defined with a partial range.

• PV and SP value relative to alarm limits - HI, DV_HI, LO and DV_LO Alarm limits are shown on the bar graph. If the PV or SP is near an alarm limit, the operator can determine this from the combination bar graph. The indication of these alarm locations is shown subtly (such as in grays), providing alarm limit information without being distracting or creating excessive visual clutter.

• Open the module's faceplate
• Open the module's detail display
• Open the module's primary control display
• Open the module's trend chart
• Open the module's historical trend in Process History View
• Open the module in Control Studio Online

The status box can be visible at run time when the alarm box is not visible. The status box is visible and a user preference applies. The dynamo can be configured to show or not show the status box when an applicable condition is active, including Bad IO, Module Not Running, Simulation Active, Analog Mode not as Expected and DC Mode not as Expected. The color of the status box is based on the named Status border color in the Theme_Colors table.

When the dynamo is configured for level 1, the target may optionally be normalized to 50%. When target is normalized, the Target indicator is shown in the center of the analog bar. In a normal operating scenario, the Target and PV appear aligned, forming a butterfly pattern on the analog bar. This makes it easy to identify when the PV deviates from the Target. The dynamo can show either a normalized target or the operating range, but not both at the same time.