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 Runtimes (or the device overview) in the Portal.
2. Each runtime shows a colored process indicator:
   • Green — the runtime process is alive and the PLC cycle is running.
   • Yellow — the runtime is reachable but reporting warnings.
   • Red — the runtime is unreachable or the process has crashed.
   • Grey — the runtime has not been provisioned or has never connected.

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