RS-485 MODBUS Serial Communication using Arduino UNO as Slave

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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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Опубликовано:

23 апр 2019

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Комментарии : 29

@thinkingindian3308 4 года назад

Very well done. Excellent job.

@makifbuz 3 года назад

Perfect explanation and documentation thank you so much.

@Circuitdigest 3 года назад

Glad it was helpful!

@electronic7979 5 лет назад

Useful video 👍

@step_freeskills101 Год назад

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

@muhammadtriza3251 4 года назад

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?

@SumeClue 2 года назад

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

@sahalasolusiindustri 5 лет назад

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?

@qzorn4440 2 года назад

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

@irfaneindb5047 3 года назад

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

@targetsathees1644 3 года назад

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

@ravikumarbiradar1115 3 года назад

Thanks brother

@blinkelectricsltd1272 4 года назад

please share the library

@sarita1667 Год назад

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 3 месяца назад

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 3 года назад

I'm not receiving Response what should I do

@txonso1194 3 года назад

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

@Circuitdigest 3 года назад

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

@txonso1194 3 года назад

@@Circuitdigest thx so much

@tanmeowsoon5252 2 года назад

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

@gibsaka31 2 месяца назад

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 2 месяца назад

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