ESP32 Forum

Posted: **Sun Dec 19, 2021 3:52 pm**

Hi,

I want to use ModBus TCP Master and I got a trouble at mbc_master_start(). I get always an Exception.

I think everything alright until to start the master. I made some status log too. Everything was configured as you can see on the attachment.

I tested with idf 4.3 and idf 4.3.1 an a got the same problem.

Could you help me somebody?

Thank you in advance.

Best regards,
Botond

Posted: **Thu Dec 30, 2021 2:48 pm**

Hi B.Botond,

Please add the end of table condition to the address table (NULL).

Code: Select all

char* slave_ip_address_table[] = {
    "192.168.3.40",
    NULL
};

Posted: **Sun Jan 02, 2022 1:45 pm**

Hi ESP_alisitsyn

Thank you very much, now the master is working.

Best regards, Botond

Posted: **Mon Jan 03, 2022 5:03 pm**

Hi Botond,

It is good to hear it works now. Good luck with your project!

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