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pyModSlave is a free python-based implementation of a ModBus slave application for simulation purposes. You can install the python module or use the precompiled (for Windows only) stand alone GUI (Qt based) utility (unzip and run). pyModSlave also includes a bus monitor for examining all traffic on the bus. You can also download it from pypi <https://pypi.org/project/pyModSlave/>.

pyModSlave is based on modbus-tk <http://code.google.com/p/modbus-tk/>, pySerial <https://github.com/pyserial/pyserial> and pyQt5 <http://www.riverbankcomputing.co.uk>.

Check out my modbus master project <http://sourceforge.net/projects/qmodmaster/>.

Checkout the following youtube videos :
Modbus RTU <https://youtu.be/1get1ELKz_A>
Modbus TCP <https://youtu.be/nX_kTQwK2f4>
Session <https://youtu.be/y_9Di7E3y8w>
Log <https://youtu.be/Xcb6sj1uzyY>

Features

  • ModBus RTU/TCP Slave
  • Simulate Coils, Discrete Inputs, Input Registers, Holding Registers
  • Monitor Bus activity [Raw Data and PDU details]
  • Supports both Windows and Linux

Project Samples

MainWindow BusMonitor RTU Settings TCP Settings Settings

Project Activity

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Categories

Communications, Interface Engines

License

GNU Library or Lesser General Public License version 3.0 (LGPLv3)

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User Reviews

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  • jimfitz101 Posted 2022-09-26
    This looks great but I can't use it because I need Modbus RTU/ASCII protocol and there doesn't seem to be an option for it.
  • c4rl0s Posted 2022-06-22
    So far so good! this tool is great!!!
  • minal29 Posted 2015-10-12
    whenever I try to connect to master it given me message saying "slave threw exception" connection timed out.. Where can I get detailed document for the user? plz help me out
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Additional Project Details

Intended Audience

Advanced End Users, Engineering, Telecommunications Industry

User Interface

Qt

Programming Language

Python

Related Categories

Python Communications Software, Python Interface Engines

Registered

2012-03-30
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