# SICK TiM Series 2D LiDAR revision history

Append-only Arc G field-change log. Forward-only honesty: events accrue from Arc G adoption.

Model: [SICK TiM Series 2D LiDAR](/models/sick-tim-series-2d-lidar.md)

_No events on file. Arc G is forward-only; the recorded event log accrues from Arc G adoption (2026-06-04) and records material changes as they flow through the updateEntityField chokepoint. For the current state of this model, see the model page._

## Forward-only note

Arc G is forward-only. The event log accrues from the Arc G adoption point. Fields with no events post-baseline equal the current cached value and are not independently verified at any prior date. To restate a recorded change, write a new event through the updateEntityField chokepoint.

_Canonical URL: /models/sick-tim-series-2d-lidar/history. REST: /v1/models/070be594-f51a-4dbf-8f28-f110ad7433c4/history. HTML: [/models/sick-tim-series-2d-lidar/history](/models/sick-tim-series-2d-lidar/history)._