Arduino UNO - Codesys Control Win V3 - Modbus RTU

In this video I explain how to connect your Arduino UNO board, to Codesys Control Win V3 soft PLC, through MODBUS RTU protocol.
The programs are available in:
github.com/mul...

[@MonteStudios]

Key bit of information at 3:10 and again at 7:10 - Thank You

[@Time4yes]

This really looks interesting but you omitted lots of information, so beginners can only Hope.

[@ashleynaidoo6907]

Please share your previous video, connecting arduino to modbus master.

[@chemesallioua1485]

Thank you

[@gustavosanchez4522]

Thanks for suggestion Chemes!

[@RahulSharma-oi4es]

which file have you uploaded in arduino ? because the file test_modbus3.ino is not compiling. You have used 7 parameters in the function modbus_configure , while as per its library it takes only 5. can you please help ?

[@gustavosanchez4522]

Hi, sorry for this delay, you have to install the library SimpleModbusSlave.h
modbus_configure is as follows:
void modbus_configure(HardwareSerial *SerialPort,
long baud,
unsigned char byteFormat,
unsigned char _slaveID,
unsigned char _TxEnablePin,
unsigned int _holdingRegsSize,
unsigned int* _regs);

[@Didactronica]

Do you change also modbus_update(); in the library? I can´t compile it. Thanks.

[@marciohogenelst]

Please, do you have the video/ link, how to install codesys in arduino ? thanks, regards

[@gustavosanchez4522]

Hi, I am using Modbus to connect Arduino UNO to a computer running Codesys. The explanation is in this video. Thanks for your comment!

[@omarzedan1261]

Hi Gustavo When I try to connect to slave the software asks user name and password, How can I solve that issue??? (I use Administrator as user name and password but it fail)

[@gustavosanchez4522]

It seem to be a problem of Codesys setup

[@Time4yes]

It's not a problem, I set up a new account, just a name and password. Or you can use your windows name and password.