MODBUS LabVIEW Library 1.1 Installers

Updated May 10, 2019

Reported In


  • NI-Serial


  • NI Modbus Library
  • MODBUS LabVIEW Library
  • LabVIEW Modbus API

Issue Details

  • I need an older version of MODBUS LabVIEW Library. Can I get the old installers?
  • I need a file from the library ni modbus.llb. This library was part of older versions of the MODBUS LabVIEW Library, however I cannot find this llb in recent versions of MODBUS LabVIEW Library anymore. Where can I get it?


The latest versions of NI Modbus library can be installed through VI Package Manager as described here: LabVIEW Modbus API.

Older versions can be obtained here: MODBUS Library for LabVIEW. Find the download link on the right side. Inside the zip file are several versions of the ni modbus.llb, compatible down to LabVIEW 7.1.

If you prefer having an .msi installer, there are installers of version 1.1 available for download:

Additional Information

Please keep in mind that the library is an example program, and not a fully supported product.

The source code of the current LabVIEW Modbus API is hosted on an external GitHub repository: NISystemsEngineering/LabVIEW-Modbus-API