Modbus Slave (Server), allowing users to send requests and monitor responses in a human-readable format. 🛠️ Software Overview The Simply Modbus suite includes several distinct tools tailored for different communication types and roles: Simply Modbus RTU Master: Connects a PC to Modbus RTU (serial) slave devices. It displays raw hex data alongside interpreted register values. Simply Modbus TCP Client: Used for testing Modbus TCP/IP servers over Ethernet. It allows for quick connection testing and register reading/writing. Simply Modbus Slave: Emulates a Modbus device on your PC. This is useful for testing Master software or hardware without needing physical equipment. 📘 Key Technical Concepts To use Simply Modbus effectively, it is essential to understand the four primary types of Modbus registers it interacts with: zeroinstrument.com Register Type Access Description Coils Read/Write Single-bit (On/Off) values, typically for relays or switches. Discrete Inputs Read-Only Single-bit status indicators from external devices. Input Registers Read-Only 16-bit values often used for sensor data or measurements. Holding Registers Read/Write 16-bit values used for configuration or multi-state status. ⚡ Setup and Operation Using the software typically involves three main steps: 1. Physical Connection For

Simply Modbus provides a straightforward interface for PCs to act as either a (client) or a Modbus Slave (server). Instead of requiring complex custom code, users can simply enter parameters—like slave IDs and register addresses—to see raw data flow in real-time. Key Software Versions

❌ No 64-bit or native Linux/macOS version. ❌ Cannot automate tests or integrate into CI pipelines. ❌ Slave simulator is a separate purchase (not included in master). ❌ No support for Modbus encapsulation or tunneling. ❌ UI is dated (classic WinForms style). ❌ No free trial for slave version (master has 30-day trial).

Enhancing the Modbus Communication Protocol to Minimize ... - MDPI