Reading Modbus and serial devices on separate USB's?

Configuration
1

I am trying to run both Modbus type serial and also read a separate USB port using serial at the same time but when I do, I don’t get anything from the serial connection, but I do from Modbus.

When I run them separately both USB devices work fine. Below is my config.


sensor:
  - platform: serial
    serial_port: /dev/ttyUSB0
    baudrate: 9600
    
  - platform: command_line
    name: CPU Temperature
    command: "cat /sys/class/thermal/thermal_zone0/temp"
    unit_of_measurement: "°C"
    value_template: "{{ value | multiply(0.001) | round(1) }}"

template:
  sensor:
    - name: deviceXDHWT1
      unit_of_measurement: "°C"
      state: "{{ states('sensor.serial_sensor').split(',')[0].split(' ')[1] | float(default=0) }}"
    - name: deviceXDHWT2
      unit_of_measurement: "°C"
      state: "{{ states('sensor.serial_sensor').split(',')[1].split(' ')[2] | float(default=0) }}"
    - name: deviceXDHWT3
      unit_of_measurement: "°C"
      state: "{{ states('sensor.serial_sensor').split(',')[2].split(' ')[2] | float(default=0) }}"
 
modbus:
    name: "deviceX"
    type: serial
    method: rtu
    port: /dev/ttyUSB1
    baudrate: 9600
    stopbits: 1
    bytesize: 8
    parity: N    
    
    binary_sensors:
      - name: "HEATER_RLY"
        scan_interval: 5
        slave: 100
        address: 0
        input_type: discrete_input

Nothing obvious in the logs apart from the template being unable to process due to sensor.serial_sensor being empty.

Any suggestions welcome.

2

To get both Modbus serial and direct serial working on separate USB devices I am using node Red to read the serial USB and pipe that back to HA! There must be another way!