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Modbus RTU Library

Forum: Engineering 🇬🇧

Creator: nareshroyal

Created: 2021-07-29

Updated: 2021-07-29

nareshroyal - 2021-07-29

Hello!

We are using Codesys Version V3.5 SP16 Patch1 + (64 bit) for OPTO22 (GRV-EPIC-PR1) controller.
I have tried to configure Modbus RTU devices in Codesys but we couldn't find Library for MODBUS RTU.
Pl assist to us how to find the Modbus RTU Library on urgent basis.

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dFx - 2021-07-29

Some help on modbus configuration :
https://help.codesys.com/webapp/_mod_f_configurator;product=core_modbus_configuration_editor;version=3.5.14.0
Some libs :
Master : https://help.codesys.com/webapp/idx-IoDrvModbus-lib;product=IoDrvModbus;version=3.5.17.0
Slave : https://help.codesys.com/webapp/idx-IoDrvModbusSerialSlave-lib;product=IoDrvModbusSerialSlave;version=3.5.17.0

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1

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- nareshroyal - 2021-07-29
  
  Thanks for the immediate response..!!
  
  How to download library package for MODBUS RTU serial communication?
  
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nareshroyal - 2021-07-29

Thanks for the immediate response..!!

How to download library package for MODBUS RTU serial communication?

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dFx - 2021-07-29

Right clic your device in HW tree, then add the modbus master or device.
Also, please make your own search before posting :
https://help.codesys.com/webapp/_cds_adding_libraries_to_project;product=codesys;version=3.5.17.0

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- nareshroyal - 2021-07-29
  
  we know how to configure and how to install...but the exact requirement is where can find the library installation file to install?
  
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  - dFx - 2021-07-29
    
    The library is installed with codesys when you install it. There is no need to browse for it, either to install it separatly. Just add it to your library manager, into your project.
    
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nareshroyal - 2021-07-29

Pl check in this screenshot there is no library for Modbus RTU serial communication

Untitled.png

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Thomas - 2021-07-29

You will never find a serial modbus device under a TCP adapter.

mbSerial.png

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dFx - 2021-07-29

Though that having a COM port on your hardware was a requirement already met.

Last edit: dFx 2021-07-29

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