# SCU5 DD Opto-Isolated Output Documentation > SCU5 DD Opto-Isolated Output Documentation **Last updated:** 2026-03-07 **Source:** https://live-roll2roll.pantheonsite.io/documentation/manuals/scu5-dd-opto-isolated-output-documentation --- **Document Type:** Manuals SCU5 DD Opto-Isolated Output Documentation ## Transcript 1110 S Innovation Way Dr Stillwater, OK 74074 Opto-Isolated Output E: sales@r2r.tech W: https://r2r.tech P/F: +1-888-290-3215 For some applications a digital output can be provided based on the application. Two opto-isolated outputs are available from the SCU5 controller. These outputs are available on a 4-pin M12 female pin connector. A standard M12 4-pin A coded male connector or a pre-wired M12 cable can be used for the connection. The pin functions for the connector are shown in the table below. Pin Assignment: Pin Function Pin Function Pin Function Pin Function 1-BR/RD VDD 2-WH OUT2 3-BL/GN GND 4-BK OUT1 The outputs can be used as NPN normally closed output by providing a VDD (5 - 24 VDC) and GND from a PLC and the signal through the two outputs OUT1 and OUT2. A typical circuit for the output is shown below: When the respective output signal is enabled then that signal would go low. And normally the signal would be high if wired as shown in the schematic on the left. Note that the outputs are normally closed. If wiring a relay, wire to the NC side of the circuit so that the appropriate output from the relay is provided to the device. All Right Reserved. Copyright © 2021 Roll-2-Roll Technologies LLC. Content subject to change without notice. Page 1 of 2 1110 S Innovation Way Dr Stillwater, OK 74074 Opto-Isolated Output E: sales@r2r.tech W: https://r2r.tech P/F: +1-888-290-3215 Connecting the output to PLC with PNP inputs can be done using a replay as shown below: All Right Reserved. Copyright © 2021 Roll-2-Roll Technologies LLC. Content subject to change without notice. Page 2 of 2 ## Downloads - [Opto-Isolated Output Documentation.pdf](https://live-roll2roll.pantheonsite.io/sites/default/files/2022-04/Opto-Isolated%20Output%20Documentation.pdf) ## Related Products - SCU5 - SCU **Tags:** SCU5, SCU --- ## About Roll-2-Roll Technologies Roll-2-Roll Technologies designs and manufactures patented fiber-optic web position sensors and advanced web guiding controllers — the precision measurement and control core of modern roll-to-roll manufacturing. Spun out of Oklahoma State University's Web Handling Research Center and trusted by Fortune 500 medical, battery, and nonwovens manufacturers, our patented sensors work without recalibration at ±0.1mm accuracy up to 760 mpm — typical customer outcomes are 50%+ less downtime and payback under six months. Headquartered in Stillwater, Oklahoma, our team of PhDs, controls engineers, and industry veterans extends the sensor + controller core into complete web guide systems including stepper-motor-based linear actuators (RLA, BLA, LHS). - Website: https://r2r.tech - Phone: +1 (888) 290-3215 - Email: sales@r2r.tech