Document the Micro Trend item-name connection in the trend task

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Clio Liu 2026-10-02 14:25:44 +10:00
parent 31ab243fb0
commit a4929e6712

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@ -131,5 +131,8 @@ rotation, zoom. Outputs (⇨): *Hairline value[n]*, *Time range begin/end*, *Upd
`<property type="componentProperty"><name>itemName[0]</name><value>…</value></property>`,
`scaleMin[n]`, `scaleMax[n]`; elements `numberOfPens`, `realTime`, `fillWithHistory`,
`timeRange` (s, default 300), `sampleCount` (default 300)): drew on desktop and web the first
time, then stayed blank on several later opens and later drew again; after an in-page reload
sometimes only part of a pen shows (intermittent, ISS-055, open).
time, then stayed blank on several later opens (ISS-055). Cause: *Number of pens* resets all
pen sources, so fixed item names can be lost during load. **Connect** `microTrend.itemName[n]`
to the item with attribute `ItemName` instead (`<action type="actionConnectTo">`, `<direction>1`,
`<itemAttribute>ItemName`; sample `CIENG_TrendLab`): both pens then drew on every open; the
history fill still failed once in three opens (only the live part drew; ISS-055 open).