Arduino based PLC with modbus USB protocol - First working program with Codesys and Arduino

[@RangaMadusanka-xe1fz]

Bro... this is awsome...

[@Time4yes]

Wow, I have been looking for this. Thanks.

[@suniskardhamar6384]

Very good, you should do more of this. 👍

[@sakhilentshangase2458]

Hey, I am having some problems, when testing the QModbus sketch it says did not receive data from the slave.

[@lachap15]

I can't seem to get any modbus communication with my pc with UNO R4, any suggestions?

[@Vivekforyouall]

good

[@griseldatorres-aceves3731]

Great Video, Thank you. I'm having problems adding the timers I get an error C0077 Unknow Type: TON; any Ideas ?

[@adibyarizaldy8219]

hello i got a problem on modbus slave with no no response timeout, do you have a solution?

[@qzorn4440]

fascinating Arduino Modbus video. do you have a video on the ESP32 Modbus master rs485 rtu using serial 02 reading input 30001 analog? thanks a lot.

[@fabriziobarbato2]

Hi! Not properly... I'm just a mechanics that sometimes have fun with electronic stuff! Thank you!

[@twojstaryniedowiary]

I have a little problem. Everything works, but the I / O state changes from time to time. Arduino is on and the output changes its state to 1 and 0. Sometimes every few seconds, sometimes every few minutes. I checked on arduino uno and on mega. Same... :/

[@fabriziobarbato2]

Mmh seems strange can you make a video and explain the problem?

[@twojstaryniedowiary]

@@fabriziobarbato2 Solved. The solution is a pull down resistor.