ENGINEERING INSIGHT

Batch History and Audit Trail in Industrial SCADA

Production history and audit trails solve different problems: what the process produced versus who changed or commanded the system and when.

Keep production and audit records distinct

Batch records contain identity, recipe revision, targets, measured values and results. Audit records focus on user actions.

Timestamp at the correct layer

Timestamp events close to the authoritative action and define ownership clearly.

Recipe traceability

Store enough recipe identity and revision information to reconstruct what was actually executed.

Design for investigation

Support filtering by time, batch, recipe and event type so deviations can be investigated quickly.