Posts tagged "RTU"
4 articles across the Voltrus blog.
This collection brings together every RTU article published on the Voltrus blog. "Modbus RTU to TCP Gateway: Bridge Serial Devices onto Ethernet", "Modbus RTU Over Serial: How It Works on RS-485", "Modbus RTU Troubleshooting Guide: CRC Errors, Timeouts, and Wiring" — each one is a practical, hands-on guide written for engineers and system integrators. Whether you are choosing between protocols, troubleshooting a connection, or planning an integration, these articles cover the concepts, the trade-offs, and the step-by-step details you need.
Modbus RTU to TCP Gateway: Bridge Serial Devices onto Ethernet
Modbus RTU to TCP gateway explained. Why bridge RS-485 serial devices onto Ethernet, how a gateway routes TCP requests to RTU slaves, latency, hardware vs software gateways.
Read articleModbus RTU Over Serial: How It Works on RS-485
A byte-level breakdown of Modbus RTU on RS-485: frame structure, CRC-16 with polynomial 0xA001, function codes, 3.5-character inter-frame timing, and a worked FC03 request/response you can read off the wire.
Read articleModbus RTU Troubleshooting Guide: CRC Errors, Timeouts, and Wiring
Fix Modbus RTU communication errors. Step-by-step troubleshooting for CRC errors, timeouts, and wiring problems. How to read Modbus RTU frames and diagnose RS485 bus issues.
Read articleModbus RTU vs TCP: Which Variant Should You Use?
Modbus RTU and Modbus TCP use the same protocol but different transports. Frame format, speed, device limits, and when to choose each variant.
Read article