I was using HAL_UARTEx_ReceiveToIdle_IT to receive data on modbus. After running for couple minutes without any issues it hits the HardFault_Handler. My registers at the time of HardFualtany help would be much appreciated
Hello, Now I'm using Modbus RTU and UART. Modbus RTU communication is being performed through UART. Modbus RTU setting is data 8 bytes, but communication is possible only when uart wordlength is set to 9 in STMcubeIDE. Why is wordlength 9 when data i...
Hi, i'm using an stm32F446re to read modbus rtu buffer from plc using usart1. now i need to send this data to a server using the gprs module sim900a on uart4 via tcp/ip. Any help please???????????
I use Modbus RTU 8N1 with 9600 bd. I always have sent the same 8 byte request. The first byte of the message is 0x01.In about 85% of all tests the STM32 evaluates the request correctly. In a 15% of all tests the first byte is evaluated as 0x80 or 0x...
Hello!I am very new to STM32 boards and MCU-s overall. I am using a Nucleo-G071RB and I implemeted this Modbus library: /ceremcem/modbus_lib. For testing I use Comtest Pro. The code was working without issues on a Nucleo-F446RE. On Nucleo-F030R8 I am...
Im using nucleo stm32f103. Does a modbus library exist or how would one go on with using modbus? Could not find any tutorials online.
Hi ,I want to use my controller as a modbus slave. there is interrupt call back function which receive predefine data.but the modbus function like 15,16 have 10 to 11 byte of data and other function has 8 byte ,how to receive that thanking you
I want to communicate with delta HMI (slave) and STM32 as master device.Now master(HMI) send data to slave(laptop) I received inverted data. Slave id is 01 but I received 7F from hmiIt works well with non inverted data.So how can I communicate b...