Labview Modbus Serial connection

[Austyno]

Does anyone have a labview example code on how to read a slave device holding register using Labview Serial port connection. Labview will be my master and it will read slave device holding register through its serial port. I could not see any example on the labview Help section and I am in need of an example to use as my starting point. Any help is well appreciated.

[RavensFan]

Download the Modbus library.  They have examples in there.

MODBUS Library for LabVIEW

[Kannan_Kn]

If you need to use Modbus RTU master then use the function in the image attached.

Tips:

Connect Create master(New serial master)->Read holding register(or)write holding register->shutdown vi.

Before run VI set baurd rate, parity, unit ID & com port in create master vi

Set the holding register address in Read holding register vi

[JensG69]

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@RavensFan wrote:

Download the Modbus library.  They have examples in there.

MODBUS Library for LabVIEW

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There are two other Modbus APIs available:

Modbus Master by Plasmionique Inc.

LabVIEW Modbus API 

All come with examples.

If you happen to own the RT- or DSC-module you'll will find yet another Modbus-API integrated in your palette.

Regards, Jens