is a free, powerful desktop simulator designed for engineers and developers to test, debug, and simulate Modbus-capable devices. Unlike some industrial tools that require heavy licensing, the Desktop Edition of Rilheva Modbus Poll offers a lightweight, Windows-based solution to fetch and edit register values from Modbus TCP and RTU devices.
Click to view the live, updating data grid on your main screen. Troubleshooting Common Connection Errors
Read Holding Registers, Input Registers, Discrete Inputs, and Coils simultaneously.
: You can download the desktop version for Windows for free directly from the Rilheva Software Download page Key Features rilheva modbus poll download
Copy the , Function Codes , Register Addresses , and Data Types validated by the poll tool directly into your Rilheva Gateway configuration template. This ensures a seamless, error-free deployment for your remote monitoring and IIoT applications. What brand or model of device are you attempting to poll? What error message or behavior are you experiencing?
[ Modbus Field Devices ] (Sensors, PLCs, Inverters) │ ▼ (Modbus RTU / TCP) [ Rilheva Modbus Poll ] <─── (Used here for local validation & staging) │ ▼ [ Rilheva Edge Gateway ] │ ▼ (Secure MQTT / HTTPS Cellular Uplink) [ Rilheva Cloud Platform ] ───> [ Web Dashboard / Alerts ]
Verifies connections over Modbus RTU (Serial) and Modbus TCP/IP. is a free, powerful desktop simulator designed for
Select the appropriate Modbus function (e.g., 03 Read Holding Registers or 04 Read Input Registers ).
Your physical hardware (e.g., a Schneider PLC, an Eastron power meter, or a temperature sensor) acts as the Modbus Slave.
32-bit floating points (IEEE 754) for precise sensor readings What brand or model of device are you attempting to poll
When evaluating the software for your toolkit, consider these technical advantages: 1. Multi-Format Data Display
Seamlessly switch between serial RTU and Ethernet TCP/IP connections.
This indicates a complete break in communication. Check your RS485 polarity ( A and B lines might be swapped), verify the IP address matches, or ensure Windows Firewall isn't blocking Port 502.