TwinCAT: hardware/fixture-gated residuals (member writes, coalescing under load, multi-hop route, stale press routes) #755

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2026-11-06T15:27:08-05:00

dohertj2 commented

2026-11-06 15:27:08 -05:00

#612 was closed on 2026-10-08 with "reopen or file fresh when a non-production TwinCAT target is available". Its remaining items, and the twincat-backlog items, are hardware or fixture gated and have no tracker entry:

Discovered struct/FB member writes. These were never exercised: the only TC3 hardware is production press Z35474, which is strictly read-only. Needs the TC/BSD fixture (10.100.0.128, down at last check) or a lab IPC.
Notification coalescing under a saturated PLC cycle. Needs the TCBSD fixture plus the GVL_Perf/FB_PerfChurn project from the stranded auto/driver-gaps branch.
Multi-hop AMS route behind an IPC gateway. No hardware.
Driver probe (Test Connect) happy path on a real ADS target. This was the residual of followups-batch task 11 (C3). Verify it is still open, since the 2026-10-08 press gates were read-only.
Ops: Z35474 and Z34834 each carry two oee-tagdump-mac routes, one of them stale (a same-name AddRoute does not replace). Removing the stale entry needs an ADS write on a production press, so it needs approval. XAR trial licence rotation is also manual.

Source: docs/v3/twincat-backlog.md (items 2, 3, 4, 5, 9 and the "Hardware available" section); docs/plans/2026-06-19-followups-batch.md.tasks.json task 11. Related: #612, #645, #739.

#612 was closed on 2026-10-08 with "reopen or file fresh when a non-production TwinCAT target is available". Its remaining items, and the twincat-backlog items, are hardware or fixture gated and have no tracker entry: - **Discovered struct/FB member writes.** These were never exercised: the only TC3 hardware is production press Z35474, which is strictly read-only. Needs the TC/BSD fixture (10.100.0.128, down at last check) or a lab IPC. - **Notification coalescing under a saturated PLC cycle.** Needs the TCBSD fixture plus the `GVL_Perf`/`FB_PerfChurn` project from the stranded `auto/driver-gaps` branch. - **Multi-hop AMS route** behind an IPC gateway. No hardware. - **Driver probe (Test Connect) happy path on a real ADS target.** This was the residual of followups-batch task 11 (C3). Verify it is still open, since the 2026-10-08 press gates were read-only. - **Ops:** Z35474 and Z34834 each carry two `oee-tagdump-mac` routes, one of them stale (a same-name AddRoute does not replace). Removing the stale entry needs an ADS write on a production press, so it needs approval. XAR trial licence rotation is also manual. Source: docs/v3/twincat-backlog.md (items 2, 3, 4, 5, 9 and the "Hardware available" section); docs/plans/2026-06-19-followups-batch.md.tasks.json task 11. Related: #612, #645, #739.

dohertj2 added the driver/twincat priority:p3 blocked migrated type:followup labels 2026-11-06 15:28:01 -05:00

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Reference: dohertj2/lmxopcua#755