Monitor runtime health

Once you provision a runtime to a device, the Portal continuously reports its health. The runtime list and the device overview show process indicators that update so you can see at a glance whether a runtime has crashed or stopped responding.

Read the runtime status

1. Open the device overview in the Portal (Devices → select the device). The same status indicator also appears next to each runtime under the Runtimes node in the IDE project tree.
2. Each runtime shows a colored status indicator with a label:
   • Started (green) — the runtime process is alive and the PLC cycle is running.
   • Stopped (grey) — the runtime is installed but not executing.
   • Error (red) — the process has crashed or reported a fault.
   • Suspended (orange) — the runtime is paused.
   • Starting… / Stopping… / Preparing… (animated) — a lifecycle transition is in progress.
   • Not installed / Unknown (grey) — the runtime has not been provisioned, or its state cannot currently be determined (for an offline device the indicator shows the last known state).

Note

There is no distinct “degraded” or “warning” state — a runtime that is misbehaving shows Error, while transient transitions surface as the animated Starting…/Stopping… states.

3. Open the device overview for more detail. The Metrics section and the Activity log provide additional context when a runtime has faulted or restarted.

Note

Health information is updated whenever the runtime reports back to the Portal. A short network blip can briefly show a non-green state before recovering — give it a few seconds before assuming a real outage.

Caution

A red indicator that persists usually means the PLC program is no longer executing. Investigate immediately to avoid an uncontrolled machine state.