Modbus communication as slave using arduino

Udit Kumar's picture

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Joined: Dec 04, 2020

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Modbus communication as slave using arduino
December 4, 2020 - 1:09pm

Hello, I'm trying to make this project but in simply modbus software I'm unable to get response how I should check the fault.the link of the project is given below.

https://circuitdigest.com/microcontroller-projects/rs485-modbus-serial-c...

Sourav Gupta's picture

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Joined: Feb 12, 2018

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Check the connection first. Are you using exactly same circuit? Did the code compiled properly?

Udit Kumar's picture

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Joined: Dec 04, 2020

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Thankyou very much for responding

As in the project there are four major parts 1. arduino /2.LCD / 3. USB to RS 45 converter module/ 4. MAX485 TTL to RS-485  /5Servo motor . I'm not using servo motor , LCD interface is OK, Circuit Connections are OK, connections of USBRS485 and MAX TTL to RS is also correct. but i can't say whether they are working or not.