The term "station lockout for missing inspection or NOK result" refers to a software-controlled blocking mechanism used in manufacturing, assembly, and quality-control processes. A workstation, machine, or subsequent process step is automatically blocked if a required inspection has not been completed or if the inspection result is NOK ("Not OK" or nonconforming). The purpose is to prevent unchecked or defective products from progressing through production and to enforce defined quality requirements.
Inspection Status Verification: Automatically checking whether all mandatory inspections required for a production or assembly step have been completed.
NOK Detection: Detecting failed or nonconforming inspection results and marking the affected product, component, or production order as not released.
Automatic Station Lockout: Blocking a workstation, machine, or subsequent process step when an inspection is missing or an NOK result has been recorded.
Process Release: Allowing production to continue only after a successful inspection, reinspection, or authorized release.
Rework Control: Automatically routing nonconforming components to defined rework, repair, or additional inspection processes.
Notifications and Escalations: Informing responsible employees or supervisors about locked stations, missing inspections, or repeated NOK results.
Authorization-Based Unlocking: Allowing a station lockout to be removed only by authorized personnel, such as quality assurance or production management staff.
Traceability: Recording inspection results, lockouts, releases, overrides, and responsible users to provide a complete process history.
Integration with Machines and Manufacturing Systems: Exchanging lockout and release statuses with machine controls, MES, ERP, and other production systems.
On an assembly line, a workpiece cannot proceed to the next station until the mandatory quality inspection has been completed.
A component fails a dimensional inspection. The system automatically blocks the next manufacturing step and routes the component to rework.
A mandatory functional test has not been performed during final assembly. The software prevents the product from being reported as completed or released.
Following a failed inspection, only an authorized quality assurance employee can remove the station lockout after a successful reinspection.
A machine does not receive a production start authorization because the inspection from the preceding operation has not yet been documented.