Once downloaded and installed, configuring your first data stream takes just a few steps: For Modbus TCP/IP Connections Set the connection type to . Enter the IP Address of your target Modbus device. Set the server port (Default is 502 ).
Some manufacturers document registers using 1-based indexing (e.g., 40001 ), while software tools often expect 0-based raw hex indexing ( 0000 ). If your data looks shifted by one row, adjust your start address up or down by one.
Follow the on-screen prompts, accept the licensing agreement, and choose your installation directory. Complete the installation and launch the application. Quick-Start Configuration: Your First Connection
While the free trial from the Rilheva download is powerful, a licensed version (purchased through Rilheva) unlocks serious capabilities. rilheva modbus poll download
To send a command to the device, simply update the value in the "Current value" field; it is sent immediately to the slave device. Stop/Save: Disconnect button to stop polling and save your session as a file for future use. common Modbus registers
Modbus RTU communicates over serial networks and requires precise physical layer matching. Select connection type .
: Unlike commercial alternatives like Witte Software's Modbus Poll (which is a paid product after a 30-day trial), Rilheva's tool is offered completely free to assist users during the initial testing phase of IIoT deployment. Once downloaded and installed, configuring your first data
While Rilheva Modbus Poll is a solid free option, you may also consider these alternatives depending on your specific needs:
Once the download is complete, follow these steps to connect to a physical device or a simulator. Step 1: Establish Physical and Network Connections
| | Cons | | :--- | :--- | | Extremely Lightweight: Runs on old laptops and industrial tablets without lag. | Dated UI: The visual design feels stuck in the early 2000s. | | Accurate Data Representation: Displays Hex, Decimal, and Float formats easily. | Limited Graphing: Not meant for visual trend analysis; strictly a grid view. | | Quick Setup: You can be polling within 60 seconds of opening the program. | Documentation: Help files can be sparse; relies heavily on user knowledge of Modbus standards. | Complete the installation and launch the application
Let’s get you the software. Follow these precise steps to download Modbus Poll from the Rilheva distribution network.
If you need a zero‑cost, portable solution and mainly work with Wiren Board or similar devices, Rilheva Modbus Poll is an excellent choice. For advanced enterprise features and extensive diagnostics, the commercial Modbus Poll from Witte Software might be worth the investment. For Linux‑native operation, consider QModMaster or modpoll.
Double-click on any register row within the active polling grid. A dialog box will pop up allowing you to input a new value. For digital points (Coils), select ON or OFF .