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F1 and F2 Speed and RPM on MiX 4000 and MiX 6000

Marisa Potgieter
  • Updated

Speed sender data and RPM signal data are measured by the on-board computer using two different frequency lines:

For FM units the configuration must be as follows:

  1. F1 - Speed sender
  2. F2 - RPM signal

For MiX 4000 and MiX 6000 devices the speed and RPM can be configured on either F1 or F2 interchangeably, meaning speed is not bound to F1 and RPM is not bound to F2. 

  • Click Manage.
  • Under Config Admin, click Templates.
  • Click on Mobile device template.
  • Search for the relevant mobile device template that you want to make changes to.
  • Click the green hyperlinked template name or the downwards actions arrow and select Edit.
  • Click on the link next to the required line.
  • Choose from the available option from the dropdown list. (If a required peripheral device is not in the list, you may need to make it available in the Peripheral library.) 
  • Click Save to connect the peripheral device and view additional settings.

SelectFlinesOnTemplate.png

 

Speed sender

The asset's speed sender is connected to the on-board computer via the F1 or F2 wire. Speed will then be read from the connected speed sender. This frequency device requires calibration using the MiX TechTool during installation.

GPS fall back

If "Enable fall back to GPS Velocity as speed" is selected, the device will use the GPS velocity to determine speed, should other methods of speed measurement be disabled, faulty or disconnected. This means that GPS fall back is not a secondary speed source but rather occurs under the following conditions according to the config:

  • Speed source not reading.
  • Not currently in GPS fallback mode
  • Ignition is on.
  • Not currently calibrating the speed source.
  • The speed pulses of the previous second should be more than 0.
  • GPS speed is > 30 km/h.
  • GPS age of reading is less than 5.
  • GPS fallback will only occur if it went from working to not working in the same trip.

This will automatically occur 30 seconds after a problem is detected and continue for the remainder of the trip.  At the start of the next trip, a test will be done to determine if GPS velocity is again required, or if normal speed measurement connection has been restored to the device.

Should "GPS velocity as speed" be initiated, this will be displayed as an event in the activity timeline.

Speed and distance events reporting can be set up in the Event Library.

RPM signal

The asset's RPM signal is connected to the on-board computer via the F1 or F2 wire. RPM, which is the measurement of the engine revs per minute, will then be read from the connected RPM signal. This frequency device requires calibration using the MiX TechTool during installation.

 

 

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