Technical Article
PLC and I/O Module Wiring Diagram Infographic
January 10, 2024 by David Peterson
A complete diagram for wiring nearly any kind of discrete I/O module, including digital, AC, or relay, including both sourcing and sinking varieties.
A complete guide to wiring PLC and remote I/O modules for inputs and outputs, whether they are AC, DC, or relay, with either sourcing or sinking operation.
Figure 1. Wiring diagram for PLC modules and remote I/O terminals. Click on the image to see a high-res (printable 11x17 size) version.
Interested in I/O devices, sensors, relays? Us too! Check out a few of our articles!
- Understanding NPN vs PNP for Sensors and Devices
- A Look Inside the Circuit Construction of an NPN and PNP Sensor
- Sourcing and Sinking for Control System Modules - Explained
- I/O Module Debate: Transistor vs. Relay Output?
- Troubleshooting for PLC Modules and I/O Devices
