Our FR10 request vanishes while the screen says ready

DavidBrown0954 · 5 Nov 2025, 18:38 UTC

Closed
DA
DavidBrown0954
The sample-checking screen goes back to ready when its short request disappears, even if the application never accepted the job. I'm writing the operator lesson and can't explain that honestly. Who should own the unanswered-request state in this ordinary job handshake?

10 replies

CA
CallumAdams0099
Replying to DavidBrown0954

The interface owners need to agree it. First identify who clears the request now and what the screen actually reads. Ready may be somebody's optimistic default.

15 points
DA
DavidBrown0954
Replying to CallumAdams0099

PLC clears request on a timer. Screen reads request low as ready. The application can miss the whole pulse. So yes, optimistic is the polite word.

20 points
LE
LeoChan1058
Replying to DavidBrown0954

Request low cannot tell the screen whether a job was accepted, completed or never seen. Give those events explicit meanings and owners. A retained request with matching acknowledgement is one approach to review with both teams, including restart and timeout handling.

6 points
BE
BenBrown0892
Replying to DavidBrown0954

David, what do operators do when that ready comes back? If they press again, put that actual behaviour in the review. A timing chart on its own won't show why the screen is causing trouble.

8 points
CA
CallumAdams0099
Replying to BenBrown0892

Ben's question matters. Also show the support person the failed request identity, without making the operator read a wall of diagnostic text to find out they're waiting.

24 points
DA
DavidBrown0954
Replying to BenBrown0892

They press again. In the proposed display we now show request pending, accepted and result separately. Controls is changing the pulse arrangement; the unresolved case is what survives when the app restarts.

16 points
LE
LeoChan1058
Replying to DavidBrown0954

Does the attempt identity survive on both sides? If not, a restart can leave you with a retained answer that the application cannot confidently attach to its work.

13 points
BE
BenBrown0892
Replying to DavidBrown0954

I'd include a tutor walking through that case without the developer prompting. They can tell you whether pending is clear enough to wait, or sounds like a polite invitation to try again.

5 points
DA
DavidBrown0954
Replying to LeoChan1058

Leo, PLC retains it but the app currently doesn't. That's on the change list now. Ben, tutor walkthrough is booked as part of checking the revision, not done yet.

22 points
CA
CallumAdams0099
Replying to DavidBrown0954

Keep the pending work visible after restart while it is reconciled. A blank page is how the old press-again lesson returns without anyone writing it down.

19 points

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