---
title: "Pause, Resume, and Cancel"
---

# Pause, Resume, and Cancel

> <IUCard title="Pause, Resume, and Cancel" link="https://inductiveuniversity.com/video/pause-resume-and-cancel/8.1" />

This page details manual state changes that can be enacted on a Chart after it has started. These state changes can be triggered via scripting (usings some of the [system.sfc](appendix\scripting-functions\system-sfc\system-sfc.md) functions listed on this page), or via the [SFC Monitor](appendix\components\vision-components\admin\SFC-monitor.md) component. 

## Security Considerations

Charts can run silently on the Gateway, but being able to interact with the chart from a Client (ie: pausing a Chart) can be useful. Since a Chart can be executing some critical process, we highly recommend utilizing [security settings](ignition-modules\vision\security-in-vision\component-and-window-security\component-and-window-security.md) to restrict access to components that are able to modify the state of a Chart. 

## State Changes - Scripting

### Pausing and Resuming

Any running Chart can be paused by using the [system.sfc.pauseChart](appendix\scripting-functions\system-sfc\system-sfc-pauseChart.md) function. When pausing a chart, any currently executing [action steps](../SFC-elements/SFC-elements.md) must finish before the Chart will transition to a paused state. As a result, it may take some time before the Chart fully transitions into the Paused state. 

Once the chart is paused, it can then later be resumed. This can be done using the **Resume** button in the chart control when testing the SFC Monitor Component, or using the [system.sfc.resumeChart](appendix\scripting-functions\system-sfc\system-sfc-resumeChart.md) function.

### Canceling

Canceling a chart works similarly to pausing a chart in that it must first wait for any currently running [action steps](../SFC-elements/SFC-elements.md) to finish execution before the chart will cancel. A chart can be canceled from a script by using [system.sfc.cancelChart](appendix\scripting-functions\system-sfc\system-sfc-cancelChart.md). Normal [rules for canceling](ignition-modules/sequential-function-charts/SFC-basics\chart-flow-and-rules.md#terminal-and-intermediary-states) apply, thus the Chart's **On Cancel** event will trigger, but not the **On Stop** event. 

## State Changes - SFC Monitor Component

Changing the state of a Chart can easily be accomplished without scripting from the [SFC Monitor](appendix\components\vision-components\admin\SFC-monitor.md) component. From the Client you can right-click on a running chart, and click the state you wish the Chart to transition to. 

Note that the [Chart Lifecycle](ignition-modules/sequential-function-charts/SFC-basics\chart-flow-and-rules.md#chart-lifecycle) is still in effect, so only charts in a Paused state may be resumed.

![" "](SFC-Monitor-state-changes.png)