📡 The Suspiciously Fun PLC Series · Deep DiveComms protocols:
Comms protocols:
how the boxes talk.
A PLC is only as useful as the things it can talk to: drives, meters, scales, remote I/O. This deep dive walks through the four you'll meet most often, which are serial (RS232/RS485), Modbus RTU, Modbus TCP and EtherCAT. For each one you'll see what it's for, when to reach for it, and exactly how a variable travels through it.
The wires
🌐 the landscape · 🔌 serial RS232/RS485 · 📟 Modbus RTU · 🔗 Modbus TCP.
The fast one & the choice
⚡ EtherCAT (the Beckhoff model) · 🔀 choosing & moving variables through each.
Pairs with the HMI & Connectivity track (OPC UA, MQTT, ADS). This one covers the field side.