One of the device i.e UPS Modbus RTU Slave RS485 is working with my device (Modbus Master) on 2400 baudrate serial communication while when UPS baud rate is changed to 9600 , then it do not communicate with my device. All setup remains same, just after baud rate change , device do not communicate .
what should be main factor for such type of issue ?
what should be main factor for such type of issue ?