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What turns a tending cycle into accepted output?

Record the comparable demand window and the owner of each machine, robot, operator, quality and downstream event. Leave unknowns visible before accepting a cell or line-output claim.

Comparison boundaryPart family and mix in both periodsManual baseline and proposed trial windowGood-part ruleOutput claim boundary

Event source and owner

Part identity and presentation

Likely owner to confirm: Material or line owner. Name the actual site source and owner; do not assume a catalogue signal is installed.

Evidence stateSource and named owner, or exclusion reason

Machine ready and load request

Likely owner to confirm: Machine builder or integrator. Name the actual site source and owner; do not assume a catalogue signal is installed.

Evidence stateSource and named owner, or exclusion reason

Unload and load completion

Likely owner to confirm: Robot integrator. Name the actual site source and owner; do not assume a catalogue signal is installed.

Evidence stateSource and named owner, or exclusion reason

Clamp, door and robot-clear state

Likely owner to confirm: Machine builder and integrator. Name the actual site source and owner; do not assume a catalogue signal is installed.

Evidence stateSource and named owner, or exclusion reason

Job start, end and interruption

Likely owner to confirm: Machine or control owner. Name the actual site source and owner; do not assume a catalogue signal is installed.

Evidence stateSource and named owner, or exclusion reason

Operator intervention and restart

Likely owner to confirm: Operations owner. Name the actual site source and owner; do not assume a catalogue signal is installed.

Evidence stateSource and named owner, or exclusion reason

Accepted, rejected or pending part

Likely owner to confirm: Quality owner. Name the actual site source and owner; do not assume a catalogue signal is installed.

Evidence stateSource and named owner, or exclusion reason

Downstream receipt or blocked state

Likely owner to confirm: Downstream process owner. Name the actual site source and owner; do not assume a catalogue signal is installed.

Evidence stateSource and named owner, or exclusion reason

Unique-part disposition at the quality cutoff

Use one named production window and one current disposition per unique part. Rework is not an extra produced part: place a part awaiting rework or inspection in pending until its disposition changes. These self-reported counts are not verified production evidence.

Quality cutoff timestamp and timezoneCount record, part identity rule and quality ownerProduced unique parts in this windowAccepted at cutoffRejected at cutoffPending inspection or rework at cutoffOther explicitly classified at cutoff

Explain any other category in the count record. Leave unavailable counts blank; do not substitute zero.

Produced-counter window check — optional evidence lane

Keep this separate from accepted parts. Only compare readings from the same counter and production-order boundary; no accepted count is inferred or filled automatically.

Counter reading at window startCounter reading at window endCounter provenance and dated windowCounter continuity during this window

Timestamp comparability review

A source timestamp, server receipt timestamp and operator entry time can describe different things. Do not infer clock synchronisation or event order from matching display formats.

Source systems, timestamp fields and meaningsClock basis and timezone mappingDated offset or uncertainty evidence and ownerTimestamp review disposition

This checks completeness only. It does not correct clocks, calculate duration or verify the review.

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Evidence boundary

This is a buyer-side request register. It does not estimate good parts, calculate OEE, prescribe safety controls, certify an interface or approve unattended operation. Keep work that overlaps machine processing as parallel intervals rather than summing every duration into a serial cycle.

The event categories are a RobotAtom synthesis from the OPC UA Machine Tools job-runtime and KPI model and a manufacturer’s machine-tending I/O example. Each installation must verify its own signals, owners, part references and quality disposition.

Read the source-backed guide