PLC and I/O Module Wiring Diagram Infographic

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