# Pen Control question for Ignition Perspective Power Chart

**URL:** <https://forum.inductiveautomation.com/t/pen-control-question-for-ignition-perspective-power-chart/108849>\
**Category:** Ignition\
**Tags:** perspective\
**Created:** [July 23, 2025, 7:26pm UTC](https://forum.inductiveautomation.com/t/pen-control-question-for-ignition-perspective-power-chart/108849 "2025-07-23T19:26:12Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![rahman.tarek](https://avatars.discourse-cdn.com/v4/letter/r/b77776/32.png) [@rahman.tarek](https://forum.inductiveautomation.com/u/rahman.tarek)\
**Post date:** [July 23, 2025, 7:26pm UTC](https://forum.inductiveautomation.com/t/pen-control-question-for-ignition-perspective-power-chart/108849/1 "2025-07-23T19:26:12Z")

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Hello!

1. By default the power chart comes with a detailed pen control table which we can collapse by hitting the button. Is it possible to have the pen control table collapsed by default? Is there something in the properties i can change?

2. Currently if a user wants to only look at 1 pen he has to manually unselect the remaining ones. Is there a way to just select one and unselect all the rest easily?

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/b/b/bb5f6383cf48370d88fb5b0287f5b121668e90e9.png)

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**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\
**Post date:** [July 23, 2025, 7:31pm UTC](https://forum.inductiveautomation.com/t/pen-control-question-for-ignition-perspective-power-chart/108849/2 "2025-07-23T19:31:46Z")

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Scripts can write to:

- `props.config.showPenControlDisplay`
- `props.pens.N.visible` (`N` starting with zero)

among many others.

> **[Perspective - Power Chart | Ignition User Manual](https://www.docs.inductiveautomation.com/docs/8.1/appendix/components/perspective-components/perspective-chart-palette/perspective-power-chart#properties)**
>
> The Power Chart collects and displays data based on the pens that have been configured on the chart.

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**Author:** ![laszlo.algacs](https://avatars.discourse-cdn.com/v4/letter/l/b5a626/32.png) [@laszlo.algacs](https://forum.inductiveautomation.com/u/laszlo.algacs)\
**Post date:** [July 24, 2025, 6:25pm UTC](https://forum.inductiveautomation.com/t/pen-control-question-for-ignition-perspective-power-chart/108849/3 "2025-07-24T18:25:37Z")

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hello!

My question regarding the power chart is, what is the solution if I don't want to give a TAG as a value to the Pen, but e.g. the value of a Dropdown value.  
There are several elements in the Dropdown, and each has its own value.  
These appear in the value, dynamically, as I select the elements in the Dropdown.  
But the value value is dynamically overwritten with the value of the selected element.  
I would like to display this in the Power chart, if possible, or if it makes sense.

Or if that is a better solution, e.g. a Derived Tag should be loaded with the Dropdown value, and then it is easier to add it to the Power chart config (tagBrowserStartPath: ) ....?

(Sorry, we are still beginners....)

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**Author:** ![SBL\_MC](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/sbl_mc/32/56813_2.png) [@SBL\_MC](https://forum.inductiveautomation.com/u/SBL_MC)\
**Post date:** [January 12, 2026, 9:01am UTC](https://forum.inductiveautomation.com/t/pen-control-question-for-ignition-perspective-power-chart/108849/4 "2026-01-12T09:01:52Z")

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Late answer, but for your no. 1 question: legend.visible - set it to true.