Connect the sensor to a PC.

Omnicomm LLS-Ex 5 sensors are connected according to the schemes:

Run the Omnicomm Configurator program on your PC.

Omnicomm Configurator (PC):

During Full-Empty calibration and subsequent calibration of the fuel tank using one type of fuel, it is recommended to turn on “Auto-adjustment” (see Sensor Settings). Perform the automatic adjustment and save the settings in the fuel level sensor.

1. Fill the measuring container with fuel
2. Immerse the Omnicomm LLS-Ex 5 sensor in the fuel to the full length of the measuring probe
3. Wait for the green “Stabilized” indicator to appear.
   Press “Full” to set the value corresponding to a full tank
4. Take the Omnicomm LLS-Ex 5 sensor out of the container and allow the fuel to flow down the measuring piece for 1 minute. Press “Empty” to set the value corresponding to an empty tank
5. Press the “Record into device” button

“Automatic adjustment” - turn on for automatic adjustment of measurements in case of a change in the permittivity of the fuel. Upon activation of auto-tuning, changes of level caused by thermal expansion of the fuel will be displayed, i.e. the level will be shown considering the current temperature. The setting is only available after sensor calibration.

“Network address” (1 to 254) – set the network address for the Omnicomm LLS fuel level sensor. When several sensors are connected to one external device, they should have unique network addresses.

“Min level” (0 to 4095) – select the minimum reading for the Omnicomm LLS-Ex 5 fuel level sensor. Default value – 0.

“Max level” (1 to 4095) – select the maximum reading for the Omnicomm LLS-Ex 5 fuel level sensor. Default value – 4095.

“Filtering” – set the output signal filtration parameters:

• “No”– no filtering is applied, only isolated strong drifts are excluded.
• “Minimum”– the data interval for filtering is approximately 15 seconds. Used for city roads
• “Medium”– the data interval for filtering is approximately 30 seconds. Used for vehicles operating at regular road conditions
• “Maximum”– the data interval for filtering is approximately 5 minutes. Used when vehicles operate at severe road conditions and is not a recommended setting as it may cause delays in fuel readings after a refueling/draining operation

“Baud rate” – select the rate for data exchange with external devices. Default value –19,200 bit/s.

“Automatic data output” – select:

• “Disabled” – no independent data output (without request) is performed
• “Enabled” – independent binary data output
• “Data output interval” (1 to 255 seconds) – set the automatic data output interval

The automatic data output mode can be used only when not more than one Omnicomm LLS 5 sensor is connected to one interface and using exclusively the LLS protocol.

“Compensate for thermal expansion of fuel” - Check the checkbox to disable the fuel level change due to temperature change when the automatic adjustment is on.

• “Compensation algorithm threshold” - set the difference of the sensor reading by which the fuel level is allowed to change due to the temperature change without compensation. Default value – 200.

“Modbus function” - select the Modbus protocol function. The default value: 3. Possible values:

• “3” - holding register reading
• “4” - input register reading

Fuel level sensor detects the protocol automatically - LLS or Modbus - and responds in the protocol of the request

“Level” - the address of the register with fuel level is specified, default value: 40001. Possible values:

• If “Modbus function” = 3, the allowed register value range is 40001-49999
• If “Modbus function” = 4, the allowed register value range is 30001-39999

“Temperature” - the address of the register with sensor temperature is specified, default value: 40002. Possible values:

• If “Modbus function” = 3, the allowed register value range is 40001-49999,
• If “Modbus function” = 4, the allowed register value range is 30001-39999