# Two-way linear-motion qualifier

Canonical URL: https://eloragrid.ai/symbols/iec-two-way-linear-motion-qualifier
Publisher: Elora Grid
Updated: 2026-10-14
Lookup label: Q020402
Drawing use: Schematic
Reference families: IEC, Manufacturer

## Symbol convention

Convention: IEC
Form: Two-way linear-motion qualifier
Autodesk IEC-60617 Symbol Preview — Linear force and motion qualifiers; vendor family reference, not certified IEC geometry or database identifier.

This qualifier identifies motion or force in both directions along a linear path.

## What it represents

This qualifier identifies motion or force in both directions along a linear path. Opposite directions of travel belong to one linear movement relationship. Separate contacts or sensors may identify each end of travel or an intermediate position.
A control schematic should relate forward/reverse or extend/retract commands to the same mechanism tag. Limit positions and interlocks are described by their own elements.

## How to read it

- Document the operated mechanism and its limit or rest positions.
- Bidirectional motion does not imply simultaneous motion in both directions.

## Information to show or reference

- Identify the associated device, circuit or diagram boundary.
- Document the operated mechanism and its limit or rest positions.
- Cross-reference the equipment data, terminal mapping or operating-state legend needed to interpret the form.

## Important distinction

Bidirectional motion does not imply simultaneous motion in both directions.

## Facts

- Reference scope: Specific public IEC-context family form
- Publisher reference token: Q020402 (Autodesk token; not a verified IEC database ID)
- Information added: Document the operated mechanism and its limit or rest positions.
- Preview: Independent educational concept; consult the publisher and applicable standard for the exact graphic

## Public references

- [Autodesk IEC-60617 preview: Linear force and motion qualifiers](https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-D3F1AA20-F564-40CC-97D3-21EBA20E717A.htm) — Autodesk. Official public publisher family name and reference context; vendor identifiers and graphics are distinct from licensed IEC database content.

## Graphic scope

Independent original educational concept illustration by Elora Grid. Not a certified standards graphic or manufacturer footprint. Unitless; not to scale. Original artwork licence: https://creativecommons.org/licenses/by/4.0/. Publisher material is linked only.