# NI-MODBUS 1.2 Readme

January 2008

ni.com/support

This file contains information about the NI-MODBUS LabVIEW Library Version 1.2. Information in this file is organized in the following sections:

- Documentation
- Supported Development Environments
- Installing the NI-MODBUS Library
- Release Notes
- Getting Started

## Documentation

The help file nimodbus.chm is included with the library.

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## Supported Development Environments

This version of the NI-MODBUS LabVIEW Library supports the following development environments:

- LabVIEW 7.1, 8.2, 8.5, and 8.6
- LabVIEW Real-Time (RT) 8.2, 8.5, and 8.6

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## Installing NI-MODBUS Library

In order to use the Library in LabVIEW, please follow these steps:

- Close LabVIEW.
- If you have version NI-MODBUS Library 1.1 on your system, it is recommended to uninstall it by going to Control Panel -> Add Remove Programs -> National Instruments Software and select NI Modbus 1.1 from the list.
- Copy NI Modbus.llb from the ##\vi.lib folder to the LabVIEW_ROOT\vi.lib directory where ## is your LabVIEW version (example 86 for 8.6) and is the root folder where you installed LabVIEW.
- Copy lvmodbus.chm and lvmodbus.txt from ##\help to the LabVIEW_ROOT\help directory.
- Copy nimodbus.mnu from ##\user.lib to the LabVIEW_ROOT\user.lib directory.
- Restart LabVIEW. You should see the NI Modbus palette in the User Libraries palette.

To Uninstall the Library, remove all the files copied from the previous steps.

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## Getting Started

To get started, please view the example VIs on the NI Modbus functions palette.

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## Release Notes

Please note that the NI-Modbus Library This example program (this "program") was developed by a National Instruments ("NI") Applications Engineer. Although technical support of this program may be made available by National Instruments, this program may not be completely tested and verified, and NI does not guarantee its quality in any way or that NI will continue to support this program with each new revision of related products and drivers. THIS EXAMPLE PROGRAM IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND AND SUBJECT TO CERTAIN RESTRICTIONS AS MORE SPECIFICALLY SET FORTH IN NI.COM'S TERMS OF USE

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