Raspberry Pi 5 with SHT20 sensor(XY MD02) Wring & Issues in Reading Data using Minimalmodbus

Question

I am trying to read sensor data from "Modbus SHT20 Sensor XY-MD02" using "minimalmodbus" library but i am unable to get the readings. I would be grateful if you can help me where am i doing wrong . I apologies if this question sounds stupid as this is my first experience with RS485 communication.

Wiring Diagram https://docs.google.com/document/d/1P_Ts34HH1cGGb3XseNed1IJn0kJBaPhUwH1PTz5cvIc/edit?usp=sharing

[Modules & Sensors']

RS485 to TTL Converter - https://silicontechnolabs.in/products/rs485-to-ttl-converter Temperature and Humidity Transmitter Modbus SHT20 Sensor XY-MD02 - https://roboticsdna.in/product/temperature-and-humidity-transmitter-modbus-sht20-sensor-xy-md02/?src=google&kwd=&adgroup={adgroup}&device=c&campaign={campaign}&adgroup={adgroup}&keyword=&matchtype=&gad_source=1&gclid=Cj0KCQiAvbm7BhC5ARIsAFjwNHtxYcYTCSiO4Y6TK0oxffiWH1NYwVIijQOv5MmM6OdBevpQqZE3KG4aAu0PEALw_wcB and Raspberry pi 5 - dibian OS

My Config.txt

# For more options and information see
# http://rptl.io/configtxt
# Some settings may impact device functionality. See link above for details

# Uncomment some or all of these to enable the optional hardware interfaces
dtparam=i2c_arm=on
#dtparam=i2s=on
dtparam=spi=off

# Enable audio (loads snd_bcm2835)
dtparam=audio=on

# Additional overlays and parameters are documented
# /boot/firmware/overlays/README

# Automatically load overlays for detected cameras
camera_auto_detect=1

# Automatically load overlays for detected DSI displays
display_auto_detect=1

# Automatically load initramfs files, if found
auto_initramfs=1

# Enable DRM VC4 V3D driver
dtoverlay=vc4-kms-v3d
max_framebuffers=2

# Don't have the firmware create an initial video= setting in cmdline.txt.
# Use the kernel's default instead.
disable_fw_kms_setup=1

# Run in 64-bit mode
arm_64bit=1

# Disable compensation for displays with overscan
disable_overscan=1

# Run as fast as firmware / board allows
arm_boost=1

[cm4]
# Enable host mode on the 2711 built-in XHCI USB controller.
# This line should be removed if the legacy DWC2 controller is required
# (e.g. for USB device mode) or if USB support is not required.
otg_mode=1

[cm5]
dtoverlay=dwc2,dr_mode=host

[all]
dtparam=uart0=on

enable_uart=1
dtoverlay=i2c-rtc,ds3231
dtparam=rtc=off
#dtoverlay=pi3-miniuart-bt

My code -

import minimalmodbus
import serial
import time


instrument = minimalmodbus.Instrument('/dev/ttyAMA0', 1)  
instrument.serial.baudrate = 9600  
instrument.serial.timeout = 2     

def read_temperature_humidity():
    try:
      
        temperature = instrument.read_register(0x0001, 2) 
        humidity = instrument.read_register(0x0002, 2)
        temperature = temperature / 10.0  
        humidity = humidity / 10.0        

        print(f"Temperature: {temperature} °C")
        print(f"Humidity: {humidity} %")

    except minimalmodbus.NoResponseError:
        print("No response from the sensor. Check connections and settings.")
    except Exception as e:
        print(f"Error: {e}")


if __name__ == "__main__":
    while True:
        read_temperature_humidity()
        time.sleep(2)  

Output-

pi@raspberrypi:~ $ sudo python3 sensor.py
No response from the sensor. Check connections and settings.
No response from the sensor. Check connections and settings.