Feature guide

Alarms and alarm history

Watch configured tag thresholds, acknowledge alerts and review recorded trips.

Find it: Machine > Diagnostics > Set Alarm or Alarm History, or a tag's screen > More (...) > Set Alarm

Set an alarm

Choose a watched tag, comparison and setpoint. Read the preview of when the alarm will activate. Turn Audible alert on or off. This creates an LScope alarm; it does not configure or acknowledge an alarm inside the controller.

Set Alarm for Peak Axis Torque above 50, audible and enabled — Setting an alarm: Peak Axis Torque above 50, audible until acknowledged.

Set a text alarm

For a STRING tag the alarm compares text. Choose Equal to or Not equal to and enter the text, for example Not equal to Recipe 3 to know when another recipe is loaded. It ignores upper and lower case and spaces at either end unless Exact match is on.

A tripped alarm showing Peak Axis Torque above 50 with Silence and Acknowledge and Dismiss buttons — Bench controller running a simulated case packer: the alarm trips while LScope is open.

Acknowledge and silence

Acknowledge records that you have seen an app alarm. It does not clear the underlying condition. Silence affects the sound. A latched alarm may remain visible after the condition clears until acknowledged. Dismissing an alert is not the same as removing its rule.

Alarm History on iPad listing every trip, newest first, with one acknowledged — On iPad: Alarm History lists every trip, newest first, and which were acknowledged.

Review history

Alarm History lists recorded trips for this machine with timing and available values. A cleared time may be absent for an active event. Export CSV before clearing history if you need those records. Deleting a rule and clearing its history are different actions.

When readings are unavailable

An unreadable or stale value is not evidence that the process is within limits. Check the connection and tag's quality before relying on the displayed condition. LScope depends on app polling and availability; it is not the machine's protective control system. Alarms are watched only while LScope is open on screen: reading stops when the app goes to the background and resumes when you return. Keep screen awake, in Connection Details under Connection Health and Settings, stops the screen from locking while LScope is open.