fix(api): use encoder position instead of homing gantry when holding …

…plate reader lid.
Opentrons · Nov 12, 2024 · 8ccf56f · 8ccf56f
1 parent 60dca54
commit 8ccf56f
Showing 1 changed file with 5 additions and 3 deletions.
diff --git a/api/src/opentrons/protocol_engine/commands/unsafe/unsafe_place_labware.py b/api/src/opentrons/protocol_engine/commands/unsafe/unsafe_place_labware.py
@@ -129,9 +129,11 @@ async def execute(
                     module.id
                 )
 
-        # NOTE: When the estop is pressed, the gantry loses position,
-        # so the robot needs to home x, y to sync.
-        await ot3api.home(axes=[Axis.Z_L, Axis.Z_R, Axis.Z_G, Axis.X, Axis.Y])
+        # NOTE: When the estop is pressed, the gantry loses position, lets use
+        # the encoders to sync position.
+        await ot3api.home(axes=[Axis.Z_L, Axis.Z_R, Axis.Z_G])
+        await ot3api.engage_axes([Axis.X, Axis.Y])
+        await ot3api.update_axis_position_estimations([Axis.X, Axis.Y])
 
         # Place the labware down
         await self._start_movement(ot3api, definition, location, drop_offset)