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A Modbus library for Linux, Mac OS X, FreeBSD, QNX and Win32

Two versions of libmodbus are currently maintained:

Download the tarball of the version you want and run ./configure; make; make install; to compile and install libmodbus on your system.

The latest stable release is also available in many Linux distributions:

You can also browse the source code on stephane/libmodbus or clone with the command:

$ git clone git://
to compile and test the latest version.