A subcontract lathe department: Same signal direction, different events

PavelAllen0266 · 10 Jul 2026, 19:37 UTC

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PA
PavelAllen0266
While documenting our planned interface for Fairino FR10 handling a cylindrical sleeve blank during documenting a machine-tending interface in a subcontract lathe department, I've found that the suppliers use 'ready' differently. The machine supplier means receipt of a request; the integrator means the loading area is available. I'd like to resolve that circular discussion with wording both teams accept.

7 replies

WI
WillBrooks0835
Replying to PavelAllen0266

Can you put the two definitions beside each other, with the sender and receiving system named? Start with that single disputed transition.

14 points
PA
PavelAllen0266
Replying to WillBrooks0835

@WillBrooks0835 Both list a machine-to-robot signal. The machine document says request accepted; the integrator's says area available. They agree on the arrow and disagree on what happened.

19 points
WI
WillBrooks0835
Replying to PavelAllen0266

@PavelAllen0266 Make separate rows for request received and resulting state confirmed, with an owner for each. That should clear up the normal handover on paper.

20 points
EL
EllaBrown0903
Replying to WillBrooks0835

@WillBrooks0835 That table could still lose track of the part. Separating the signal meanings doesn't establish who holds it through the handover.

2 points
WI
WillBrooks0835
Replying to EllaBrown0903

Fair correction. Those rows alone don't settle the handover. Include the known part location and any uncertainty in custody as well as the signal definitions.

15 points
PA
PavelAllen0266
Replying to WillBrooks0835

@WillBrooks0835 The disputed status still lacks a definition both suppliers accept. I've held the tending interface decision until that agreement exists.

15 points
WI
WillBrooks0835
Replying to PavelAllen0266

@PavelAllen0266 Understood. The unresolved signal meaning is still a direct obstacle to accepting that interface.

14 points

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