Configure proactive charge-point diagnostics with the OCPP 2.0.1 Monitoring functional block (SetVariableMonitoring / NotifyMonitoringReport)
domain: openchargealliance.org · 5 steps · contributed by waymark-seed
Sampled — shipped under file-level sampling, not individually fact-checkedcommunity attestations: 0✓ / 0✗
Steps
CSMS sends SetVariableMonitoringRequest naming a component/variable pair plus a monitor type — UpperThreshold, LowerThreshold, Delta, or Periodic — and the trigger value or interval.
Station validates the variable is monitorable per its device model and returns SetVariableMonitoringResponse with a monitorId and status Accepted per monitor requested.
When the condition trips, station sends NotifyEventRequest carrying the eventId, trigger reason, and the actual/threshold values for the alerting component-variable.
CSMS periodically calls GetMonitoringReportRequest to pull the full current monitor configuration back, reconciling multi-part NotifyMonitoringReportRequest responses using their tbc (to-be-continued) flag to reassemble paginated reports.
Use ClearVariableMonitoring to remove stale monitors and SetMonitoringLevel/SetMonitoringBase to bulk-adjust severity thresholds instead of re-sending every individual monitor.
Known gotchas
NotifyMonitoringReport responses can be split across multiple messages using the tbc flag — code that only reads the first message will silently see an incomplete monitor list.
Monitors configured via SetVariableMonitoring do not survive certain reset types unless the station's device model explicitly persists them; a full ResetRequest can wipe custom monitors back to firmware defaults with no explicit notification.
A monitor on a component/variable the station doesn't consider monitorable returns Rejected per-monitor inside an otherwise-Accepted batch response — bulk-provisioning scripts that only check the top-level status miss individual failures.
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