unable to retrieve data from a rs485 based flowmeter

The flowmeter contains a atmega 16 chip and i am trying to get flowrate and flow totalizer from it via rs485 to ttl converter using a arduino nano data related to the rs485 signal and data registers - 0x4001 to 0x4003 ---> flow rate value 0x4004-->flow rate value unit 0x4005 to 0x4007 -->totalizer value 0x4008-->totalizer value unit first digit is data bits which is 8b Second digital is Parity which you select as N for None, E for Even, O for Odd Third digit is stop bite which you can select as 1 / 2 bits device id - 025 ide using - arduino ide the code ---->