Hello, I'm working on a modbus project using the pycom controller to read a few input registers. But there I get the same error as you Sameer and I'm not able to make the code run correctly. What did you do that the code work? Regards, Jan current code: ######################### RTU SERIAL MODBUS ######################### uart_id = 0x01 modbus_obj = Serial(uart_id, pins=('P3', 'P4')) ###################### READ INPUT REGISTERS ################## slave_addr=0x01 starting_address=0x04 register_quantity=2 signed=True register_value = modbus_obj.read_input_registers(slave_addr, starting_address, register_quantity, signed) print('Input register value: ' + ' '.join('{:d}'.format(x) for x in register_value))

@alg cool, glad to hear that your problem is solved :-)

thanks @daniel

@constantinos Fank you very much, i fink it will be very helpfull in my future researchers!