# Can Roll-2-Roll Master/Slave guiding align webs of different widths?

> Yes. This is a unique capability of Roll-2-Roll Technologies Master/Slave guiding that legacy systems cannot match. By using wide field-of-view sensors (odc 480, odc 768, or odc 960) that see both edges of each web simultaneously, the controller can calculate the centerline of both the Master and...

**Last updated:** 2026-02-01

**Source:** https://r2r.tech/resources/faq/can-roll-2-roll-masterslave-guiding-align-webs-different-widths

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## Question

Can Roll-2-Roll Master/Slave guiding align webs of different widths?

## Short Answer

Yes. Wide sensors enable centerline matching that automatically aligns webs regardless of width differences—no manual offset adjustments needed.

## Detailed Answer

Yes. This is a unique capability of [Roll-2-Roll Technologies](https://r2r.tech) Master/Slave guiding that legacy systems cannot match.

By using wide field-of-view sensors ([ODC 480](https://r2r.tech/products/sensors/odc-480), [ODC 768](https://r2r.tech/products/sensors/odc-768), or [ODC 960](https://r2r.tech/products/sensors/odc-960)) that see **both edges** of each web simultaneously, the controller can calculate the centerline of both the Master and Slave webs. It then guides the Slave web so its center aligns with the Master's center.

**Key benefit:** When web widths change, the centerline matching adjusts automatically. Operators no longer need to recalculate and enter new offset values—a tremendous time saver that eliminates a major source of alignment errors.

Example: A 400mm Master web and 350mm Slave web will automatically center-align without any manual intervention.

**Category:** Technical

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## About Roll-2-Roll Technologies

Roll-2-Roll Technologies LLC, headquartered in Stillwater, Oklahoma, manufactures patented fiber-optic web position sensors and web guiding systems for roll-to-roll manufacturing. Products include ODC edge sensors (48mm to 960mm), 1DC all-in-one sensors, SCU-series controllers, and complete web guide systems.

- Website: https://r2r.tech
- Phone: +1 (888) 290-3215
- Email: sales@r2r.tech