Need help for Modbus Interface

Ritesh
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Location: India
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Need help for Modbus Interface

Postby Ritesh » Wed Jul 03, 2019 5:08 am

Hello ESP32 SDK Developers,

We are planning to use Modbus for ESP32 with below requirements.

- Modbus Master
- Modbus Slave
- Modbus over RS485
- Modbus over Ethernet

So, We have checked few links over ESP32 community and found that ESP32 is giving modbus master and slave support for that so that user can use it easily and can develop application as per his requirement

https://docs.espressif.com/projects/esp ... odbus.html
https://github.com/espressif/esp-idf/tr ... dbus_slave
https://github.com/espressif/esp-idf/tr ... bus_master
https://www.instructables.com/id/ESP32- ... aster-TCP/
viewtopic.php?t=9051
https://github.com/espressif/esp-idf/bl ... modbus.rst
https://iiot-shop.com/news/esp32-modbus-master-tcp/
https://www.nabto.com/modbus-guestblog/
https://www.hackster.io/techbase_group/ ... ter-5a0f8e
https://github.com/topics/modbus-master
https://www.esp32.com/viewtopic.php?t=8111

So, i have one question like will it be implemented as generic or it will be specifically used into ESP32? Because we have also requirement to use modbus as common library for other ARM based targets.

Please let me know your feedback as per our requirement.
Regards,
Ritesh Prajapati

Ritesh
Posts: 1050
Joined: Tue Sep 06, 2016 9:37 am
Location: India
Contact:

Re: Need help for Modbus Interface

Postby Ritesh » Thu Jul 04, 2019 5:55 pm

Hello ESP32 SDK developers,

Would you please check above requirements and let me know feedback from same.

I am still waiting for your valuable feedback regarding same.
Regards,
Ritesh Prajapati

Ritesh
Posts: 1050
Joined: Tue Sep 06, 2016 9:37 am
Location: India
Contact:

Re: Need help for Modbus Interface

Postby Ritesh » Sun Jul 07, 2019 8:23 am

Hello ESP_Sprite, ESP_Angus, Wifive

Still waiting feedback for same as per queries asked into earlier thread.
Regards,
Ritesh Prajapati

ESP_alisitsyn
Posts: 8
Joined: Fri Feb 01, 2019 4:02 pm

Re: Need help for Modbus Interface

Postby ESP_alisitsyn » Thu Jul 11, 2019 9:50 am

Hello Ritesh,

Thank you for your question! I apologize for the delay with answer.
Current release of ESP-IDF supports Modbus Serial Master/Slave + RS485.
The implementation uses Freemodbus stack architecture with the customized common interface layer specific for ESP-IDF and port layer for ESP32. This realization is specific and Espressif is not going to make it as generic but customers can update port layer and common interface layer to use it with other CPUs and framework. Also there are plans to add Modbus TCP support using this common interface layer APIs.

Let me know if you have any other questions.

--

Alex

Ritesh
Posts: 1050
Joined: Tue Sep 06, 2016 9:37 am
Location: India
Contact:

Re: Need help for Modbus Interface

Postby Ritesh » Thu Jul 11, 2019 1:31 pm

ESP_alisitsyn wrote:
Thu Jul 11, 2019 9:50 am
Hello Ritesh,

Thank you for your question! I apologize for the delay with answer.
Current release of ESP-IDF supports Modbus Serial Master/Slave + RS485.
The implementation uses Freemodbus stack architecture with the customized common interface layer specific for ESP-IDF and port layer for ESP32. This realization is specific and Espressif is not going to make it as generic but customers can update port layer and common interface layer to use it with other CPUs and framework. Also there are plans to add Modbus TCP support using this common interface layer APIs.

Let me know if you have any other questions.

--

Alex
Hello Alex,

Thanks for your Valuable feedback regarding same.

Would you please let us know like when you have plan to add Modbus TCP support using this common interface layer APIs?

Can i get any use-case examples with existing implementation of Modbus Master and Slave?
Regards,
Ritesh Prajapati

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