Uploaded March 2026 | Updated September 2026, 2 weeks ago

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▶ You can read the full article here:
realpars.com/blog/sinking-and-sourcing-plc-outputs

⌚Timestamps:
00:00 - Intro
00:36 - Sinking and sourcing
01:57 - Output module types
03:21 - Output modules
06:40 - Wrap-Up

Learn how to quickly diagnose PLC output issues by understanding sinking and sourcing modules.
In this video, we break down how current flows in PLC output circuits, how sourcing and sinking outputs work, and how to troubleshoot common faults using examples like the Allen-Bradley 1756-OB16D and 1756-OV16E. You’ll also see how ST and FLT LEDs help identify open loads, wiring issues, and false voltage readings.

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Check out the courses mentioned in the video:

Industrial Electrical Maintenance Essentials 1: realpars.com/courses/industrial-electrical-maintenance-essentials

PLC Hardware Fundamentals:
realpars.com/courses/plc-hardware-fundamentals

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Did you miss out on the latest and greatest? Catch up now by watching our videos right here:

realpars.com/blog/plc-modules-explained

realpars.com/blog/pwm-sensors

realpars.com/blog/plc-timers-studio-5000

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