RS-485 MODBUS Serial Communication using Arduino UNO as Slave

For the complete tutorial for RS485 MODBUS serial communication using Arduino Uno as Slave, visit: circuitdigest.com/microcontro...
For Arduino as Master, visit this link: circuitdigest.com/microcontro...
Brief About Arduino MODBUS Serial Communication:
Modbus is a Serial Communication protocol that was discovered by Modicon in 1979 and it is used for transmitting data over serial lines between industrial electronic devices. RS-485 Modbus uses RS-485 for transmission lines. It should be noted that Modbus is a software protocol and not a hardware protocol. It is divided into two parts as Modbus Master and Modbus Slave. In the RS-485 Modbus network, there is one Master and 127 Slaves each with a unique address from 1 to 127.
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[@sahalasolusiindustri]

i can't send data from arduino from serial monitor to change SV for Slave address 2. Can you help me, how do i solve it?

[@thinkingindian3308]

Very well done. Excellent job.

[@muhammadtriza3251]

hallo, your video is usefull but i have a problem. i want to send data from slave (arduino) to master. but i don't know that syntax. can you help me?

[@irfaneindb5047]

hello sir, if i want to use tx / rx from softwareserial, is it possible?

[@electronic7979]

Useful video 👍

[@makifbuz]

Perfect explanation and documentation thank you so much.

[@Circuitdigest]

Glad it was helpful!

[@SumeClue]

Can i read data in a Elevator system's MODbus or Canbus so that i can find out the floor number shown in the display using arduino? Please help

[@step_freeskills101]

Nice video. I have a question, can you demonstrate the reading as well?

[@qzorn4440]

excellent Simply Modbus description video: i think this example translates " 01 10 00 00 00 03 06 00 01 00 00 00 6A DB 37" to >>> DeviceID; FunctionOpcode; StartAdress; Count; CrcLow; CrcHigh this RTU: 01 = slaveID, 10 = FC, 00 00 = HiLowStartAddress, 00 03 = NumOfRegisters, 06 = ByCount?, 00 01 = L1on, 00 00 = L2off, 00 B4 = 180motor, DB = CrcL, 37 = CrcH

[@sarita1667]

Can I use this program with arduino nano or not. Because When I use this program with my arduino nano then it won't work. So please tell me solution to how I do that.

[@user-dv8dw3ld4f]

Hello bro i want the Communication of arduino with fatek plc, having arduino as slave, do you have any idea, if any then please make a video on it or give me the necessary information here. Thanks in advance

[@uditkumar5854]

I'm not receiving Response what should I do

[@blinkelectricsltd1272]

please share the library

[@ravikumarbiradar1115]

Thanks brother

[@gibsaka31]

Hello , i have problem when sending data . I press Send button but i do not receive any response in the Response tab , so i am not sending any data . Any idea ? I checked pin connections ..

[@Circuitdigest]

Make sure you have selected the correct COM port and set the COM port settings as mentioned in the post.

[@targetsathees1644]

Please do video without using modbus software. Do it same communication with any real devices like temperature controller. How to get values and how to read valves in arduino

[@tanmeowsoon5252]

Hi sir i want to download your Arduino software how to i do it , Many Thanks, Tan Meow Soon

[@txonso1194]

Hello, its posible use softwareserial with modbusrtu library i want to use serialprint, can u help me?

[@Circuitdigest]

please post your question on our forums circuitdigest.com/forums. I am sure someone there will be able to help you with this

[@txonso1194]

@@Circuitdigest thx so much

[@preetsoni2176]

Simply modbus write doesn't work when I press send button..plz help

[@Circuitdigest]

Please write your queries on our Forum to get them answered fast circuitdigest.com/forums

[@sonateresa]

did you find the solution?? please help

[@uditkumar5854]

Sir I'm unable to send data what should I do

[@Circuitdigest]

You can try posting your problem in detail on our forums. circuitdigest.com/forums The author will respond to you there

[@sonateresa]

do you know the solution?? please help

[@gibsaka31]

@@sonateresa check if RE and DE pins are connected together .