Software Download Section


ComTest Pro Communication Test Software for Modbus RTU and Modbus TCP Devices

This complementary program allows users to test and troubleshoot MODBUS RTU communication by sending single or multiple read or write commands to the device. The software offers comprehensive data-logging, data-formatting and error checking features.

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File Size: 9.8 MB

File Format: Windows ZIP File

Compatible with Windows XP and up.

Installation: Unzip File to Temporary Folder and run setup.exe

Click here to download program without installer (9.8 MB)

Software Features:

Serial communication baud rates up to 230.4K

Support for MOBUS TCP and MODBUS RTU over Ethernet

Decimal/Hexadecimal logging

Read Holding Registers (0x03) w/ customizable function codes

Write Single Holding Register (0x06) w/ customizable function codes

Write Multiple Holding Registers (0x10) w/ customizable function codes

Detailed logging with date and time step

Write function support for up to 128 data registers

Read function support for up to 128 data registers

Raw data view selectable Hex/Dec

Read or Write a range of user specified registers

Read or Write registers auto-color for valid and error response

Loop / Repeat Command

Advanced Error Checking Dialog

Independent Valid, Error and Time-Out counter with reset function

Save log file in text or rich text format (color coded)

Valid Response Counter with independent Reset Function

Error Response Counter with independent Reset Function

Time-out Response Counter with independent Reset Function

Error message suppression function

Comprehensive error checking

Adjustable Response Delay Time

Adjustable Transmission Delay Time

Selectable RTS Control Selectable

Selectable Echoback Suppression

Reverse CRC Support

Comprehensive Help File

Automatic Update Function