This is not possible yet.

Hello Michael.Uray, As I understand you use the freemodbus component from esp-idf v4.4. Unfortunately this component will not work with the configuration used in your application because your other tasks blocks the normal processing of modbus tasks. Please try to fix this using the instruction below...

Hi Cacomixtle, There are several variants to do this. The most simple way is to use the function : https://github.com/espressif/esp-modbus/blob/master/freemodbus/common/esp_modbus_master.c#L83 in your code and fill the request structure with the modbus command 6 (`mb_param_request_t`). It is possibl...

Hi Silvesterrr,

Have you been able to solve your issue here https://github.com/espressif/esp-idf/issues/9714 ?

luodandhh ,

Could you provide more information for your issue?

Thanks.

Hello, Vidit Patel, The ESP_MODBUS supports the standard function codes: https://github.com/espressif/esp-modbus/blob/master/freemodbus/modbus/include/mbproto.h#L49 The defines you showed are used as the object dictionary attributes. For more information on how to configure ESP_MODBUS see the docume...

Hi @Silvesterrr,

The question is answered here: https://github.com/espressif/esp-idf/issues/9714

Hello @kakarot, The problem is in enabled `Modbus stack use timer for 3.5T symbol time measurement` option but the v4.4 will not use this correctly without the patch. I recommend you to use the `esp-modbus` component from: https://www.github.com/espressif/esp-modbus In order to use `esp-modbus` comp...

Hello @accacca, The descriptor must contain information about all registers in all slaves that you are going to access using the Modbus read/write API. So, the description table is a map of your network segment. However, you do not need to rewrite this table each time manually. You can fill it dynam...

Hello @kakarot , This happens because your slave device responds right after the slave response timeout configured in the master kconfig. After response timeout, the master starts the next transaction but gets a response from the previous one due to slave processing delay. The Modbus serial protocol...