Hi @ shubhs156,
This is not related to Modbus library but in the system library. This has been already fixed.
Search found 203 matches
- Thu Mar 21, 2024 5:44 pm
- Forum: ESP-IDF
- Topic: Modbus Serial Master example results in runtime error
- Replies: 1
- Views: 2492
- Fri Dec 15, 2023 11:03 am
- Forum: ESP-IDF 中文讨论版
- Topic: ESP-32 C3编译官方例程缺少头文件
- Replies: 1
- Views: 23237
Re: ESP-32 C3编译官方例程缺少头文件
The answer is here: https://esp32.com/viewtopic.php?f=25&t=37255
- Fri Dec 15, 2023 11:03 am
- Forum: ESP-IDF 中文讨论版
- Topic: ESP32 C3 modbus-master官方例程编译报错
- Replies: 3
- Views: 15809
Re: ESP32 C3 modbus-master官方例程编译报错
Please see the answer here: https://esp32.com/viewtopic.php?f=25&t=37255
- Fri Dec 15, 2023 10:56 am
- Forum: ESP-IDF 中文讨论版
- Topic: ESP-32 C3官方例程modbus-master缺少头文件
- Replies: 1
- Views: 16941
Re: ESP-32 C3官方例程modbus-master缺少头文件
The esp-modbus official example uses common structures for saving the modbus parameters for master and slave. https://github.com/espressif/esp-idf/blob/master/examples/protocols/modbus/serial/mb_master/main/idf_component.yml#L5 Also, the example has the dependency with other esp-modbus components (e...
- Thu Nov 23, 2023 12:42 pm
- Forum: Hardware
- Topic: ESP32 Modbus RS485 sensor not responding
- Replies: 5
- Views: 2322
Re: ESP32 Modbus RS485 sensor not responding
Hello yasmineK, Thank you for the information. You can use the modbus master example here: https://github.com/espressif/esp-idf/tree/master/examples/protocols/modbus/serial/mb_master to communicate with your device using RTU mode. https://docs.espressif.com/projects/esp-idf/en/latest/esp32/get-start...
- Thu Nov 23, 2023 10:02 am
- Forum: Hardware
- Topic: ESP32 Modbus RS485 sensor not responding
- Replies: 5
- Views: 2322
Re: ESP32 Modbus RS485 sensor not responding
Hello yasmineK, Thank you for the information. You can use the modbus master example here: https://github.com/espressif/esp-idf/tree/master/examples/protocols/modbus/serial/mb_master to communicate with your device using RTU mode. https://docs.espressif.com/projects/esp-idf/en/latest/esp32/get-start...
- Thu Nov 23, 2023 9:20 am
- Forum: General Discussion
- Topic: Unable to get parameter response using MODBUS RTU
- Replies: 1
- Views: 1292
Re: Unable to get parameter response using MODBUS RTU
@ Kirti_Lalwani10, What kind of slave device you are using with master? The error messages says that your device reports failure or sends incorrect response to request from master. Also, please send the communication log that will allow to recognize what is the reason for the errors. As an alternati...
- Mon Nov 13, 2023 6:59 pm
- Forum: ESP-IDF
- Topic: TCP modbus slave example with ESP32-POE-ISO in idf 4.4
- Replies: 1
- Views: 573
Re: TCP modbus slave example with ESP32-POE-ISO in idf 4.4
Hi, The issue is related to your Ethernet interface configuration. The driver can not recognize your Ethernet chip ID. This is usually related to pin configuration of the interface and as well as its clock source. Please check clock source used by your board. The clock source can be from external XT...
- Mon Nov 13, 2023 2:05 pm
- Forum: ESP-IDF
- Topic: Modbus TCP Slave ID/Unit ID
- Replies: 10
- Views: 7649
Re: Modbus TCP Slave ID/Unit ID
The first release is expected right after completion of testing stage. Some date after start of new year.
- Mon Nov 13, 2023 1:53 pm
- Forum: Hardware
- Topic: ESP32 Modbus RS485 sensor not responding
- Replies: 5
- Views: 2322
Re: ESP32 Modbus RS485 sensor not responding
Hello, Do you have the name of sensor and the Modbus protocol mapping table or the manual for this sensor? If not, it will be very difficult to get the information. Please provide more information and I will try to help you to configure the device with esp-modbus. Also please describe you interface ...