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Register Types

1 article tagged "Register Types" on the Modbus Poll blog.

This collection brings together every Register Types article published on the Modbus Poll blog. "Modbus Register Types Explained: Coils, Discrete Inputs, Holding Registers, Input Registers" — each one is a practical, hands-on guide written for engineers and system integrators who work with Modbus Poll in real industrial deployments. 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.

1 article
May 14, 2026·Guide

Modbus Register Types Explained: Coils, Discrete Inputs, Holding Registers, Input Registers

The four Modbus data types and their function codes. How to read coils (FC01), write registers (FC06/FC16), and avoid common addressing mistakes.

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