Modbus RTU/ASCII Master Tool
Overview
This test tool turns your Windows PC into a Modbus RTU or Modbus ASCII Master.
Connect to Modbus RTU or Modbus ASCII slave devices to test, troubleshoot, and monitor Modbus serial communication.
Key Features
- Functions as a Modbus RTU Master or
Modbus ASCII Master - Read data from and write data to RTU or ASCII slave devices
- All data is displayed in one window
- Supports multiple data types in the same message
- Supports byte order and word order swapping
- Supports Standard Modbus and Enron Modbus
- Supports RTS delay for radios
- Supports 2-byte slave IDs
- Includes a notes column allows labeling the results
- Save and restore settings in configuration files
- Write window allows writing single and multiple values
- Request data continuoulsy on a schedule
- Log results to a text file for later anaysis
- Save Byte History Log to a text file
16 bit Register Function Codes
| Function Code | Action |
|---|---|
| 04 | Read Input Registers |
| 03 | Read Holding Registers |
| 06 | Write Single Holding Register |
| 16 | Write Multiple Holding Registers |
1 bit Coil Function Codes
| Function Code | Action |
|---|---|
| 02 | Read Discrete Inputs |
| 01 | Read Coils |
| 05 | Write Single Coil |
| 15 | Write Multiple Coils |
Download
The free download has full functionality and runs in demonstration mode until licensed.
Demonstration mode limits sending and receiving to six messages.
It can then be restarted to send and receive more messages.
Download and run in demonstration mode. Try before you buy.
System Requirements:
Windows NT, 95, 2000, XP, Windows7, Windows8,
Windows10 & 11
display resolution: 800 x 600 minimum
PC with serial port (built in, serial card or USB serial port)
Simply Modbus RTU/ASCII Master 8.1.2
Looking for older versions of the software? View previous site
Purchase
Licenses are available for single users, multiple users, or site licenses.
Purchase License