Hello EmrahDuatepe, In your code, you are missing the required parts of Modbus initialization and start. This causes the main task to be deleted after Modbus initialization. 1. Port initialization https://docs.espressif.com/projects/esp-modbus/en/latest/esp32/port_initialization.html#modbus-api-port...

Hello @sjdczw,

Support of multi-master and multi-slave Modbus is not ready.

Hello ClosedLoop, Please change the code as below: // Modbus slave initialization static esp_err_t slave_init(mb_communication_info_t* pcomm_info) { mb_register_area_descriptor_t reg_area; // Modbus register area descriptor structure void* slave_handler = NULL; // Initialization of Modbus controller...

Hello alhadi, Did you try the`https://github.com/espressif/esp-modbus` library with the OTA? The library does not support OTA update functionality from the box and some issues are expected. The current implementation of ESP-Modbus uses RTOS-driven tasks to handle the Modbus requests which can be blo...

Hi, The freemodbus component migrated to https://github.com/espressif/esp-modbus . Documentation: https://docs.espressif.com/projects/esp-modbus/en/latest/esp32/ The examples for modbus https://github.com/espressif/esp-idf/tree/a82e6e63d9/examples/protocols/modbus/serial/mb_slave are still actual an...

The update will be tracked as per the issue:
https://github.com/espressif/esp-modbus/issues/3

@rtborg,

Can you use this ESP32 https://components.espressif.com/compon ... esp-modbus library?
https://github.com/espressif/esp-idf/tr ... tcp_master

@JonathanJol , Thank you for your code snippet and clarification. The code you provided is fully functional and Modbus communication with the static IP can be established once you set the netif interface correctly in the Modbus slave configuration as @ESP_ondrej described above. https://docs.espress...

@rtborg , It is possible to add support for the other four options for FLOAT format. I was discussing about this here: https://esp32.com/viewtopic.php?f=2&t=23040&hilit=modbus+floating https://github.com/espressif/esp-modbus/issues/3 The new float type defines can be added here: https://github.com/e...

Hello @JonathanJol, What do you mean under "ESP32 IP address"? Is it the address of the WiFi interface? The Modbus TCP example uses the example_connect common code to initialize the netif. It supports an ethernet connection over the W5500 driver. The master IP address should be obtained automaticall...