TradeStation Help
Many indicators have alert criteria written into them; once you enable the alert for the indicator, then when market activity on the last bar of the chart meets the criteria specified by the indicator, an alert is triggered.
Your charting application checks for alert conditions when you first apply the indicator to the chart. Thereafter, it will check for alert conditions when:
To quickly turn alerts on or off, right-click on the study or drawing object (in a Chart) or an study column (in RadarScreen), then select Alert from the menu and choose an alert action to enable or Disable to turn off all alerts for the selected study.
In order to monitor alerts, make sure you enable the Update on every tick option. If not, indicators are recalculated only at the close of the bar. When an alert is triggered, the details of the alert are posted to the Message Center. By default, you are also notified by means of an audible beep and an Alert Notification dialog. However, you can choose what type of notification you want to receive - an email message, visual alert, or sound notification. For instructions for changing the way you are notified and on how to use the Message Center to monitor your alerts, see About the TradeStation Message Center.
See Format Analysis Technique - Alerts to set drawing object alerts.