There are a number of channels that are automatically added to the display setup. These cannot be deleted as they can be critical to the display operation.
By default, the pre-defined outputs are hidden from view in the Channels Tab and are only visible as appropriate inputs when configuring other channels or gauges. They can be made visible in the Channels Tab by checking the Show Predefined Outputs box.
Most Display Module types have multiple analogue inputs named A1 Raw, A2 Raw etc.
Analogue inputs typically have 12 bit resolution with a range of 0 to 4095.
CAN status channels such as CAN 1 Status channel can be used to display the state of the current CAN port by setting it as the input to a Text Input Gauge gauge.
More than one status channel may be available if the Display Module supports multiple CAN ports.
| Status | Description |
|---|---|
| CAN 1 OK | The CAN bus is working correctly. |
| CAN 1 DISABLED | The CAN bus has not been setup or is not present. |
| CAN 1 BUS OFF | A serious error has occurred on the CAN bus - this may be due to the wrong baud rate being set or the CAN wires shorted together. |
| CAN 1 Disconnected | No messages have been received by the display in the last three seconds. |
| CAN 1 Warning | Errors are present on the bus; this may be due to incorrect baud rate or noise. |
| CAN 1 Tx not acknowledged | A message sent by the Display Module has not been acknowledged by any nodes on the network. |
| CAN 1 TOO MANY MESSAGES | The total number of messages that the display is being asked to receive and transmit exceeds the capability of the CAN hardware. This can be overcome by using CAN message masks. |
| CAN 1 Rx Timeout | Traffic is present on the bus but none of the channels that the Display Module has been set up to monitor on the current screen (and monitor screen) are present. |
The Display Module can perform lap timing when connected to a suitable beacon. To configure lap timing see Lap Timing / GPS .
Most lap timing channels are ’time’ types; Gauges should use time based formatting to display them (see Value Formatting ).
If lap timing channels are used as inputs to other channels, they are first converted to milliseconds and sent as a floating point number instead of as a time value.
To display lap time deltas on Bar Gauges , create a Linear (Scalar) Channel with the pre-defined delta channel as an input. This will convert the time to a floating point number, making it possible to use it in a bar type gauge.
| Channel Name | Description |
|---|---|
| Current Lap Num | The current lap number. This is zero until the first beacon has been passed then increments by 1 each time a beacon is passed. |
| Current Lap Time | The elapsed time of the current lap. When a beacon is passed, the lap time will freeze for 3 seconds to show the time of the lap just completed before resuming to show the new current lap time. |
| Last Lap Num | The number of the last lap just completed. |
| Last Lap Time | The lap time of the lap just completed. |
| Fastest Lap Num | The number of the fastest lap in the current session. |
| Fastest Lap Time | The time of the fastest lap. |
| Fastest Lap Delta | The time difference between the last completed lap and the previous fastest lap. |
| Last Lap Delta | The time difference between the last completed lap and the previously completed lap. |
| Fastest Lap Average Speed | The average speed of the fastest lap. |
| Last Lap Average Speed | The average speed of the last lap. |
| Predicted Lap Time | The predicted lap time of the current lap based on the fastest lap. |
| Predicted Fastest Delta | The predicted difference between the current lap and the fastest lap. |
| Predicted Last Delta | The predicted difference between the current lap and the last lap. |
The Screen Selector channel is derived from an analogue input (depending on the type of module).
It uses a lookup table that is pre-calibrated for a 12 position switch using 1k resistors.
If you have used a different page select switch, the lookup table may need to be recalibrated.
If page select is being done via CAN or a button press, the page select input can be used as an analogue input (shown as A00 Raw).
To prevent the input also changing pages, edit the Screen Selector lookup table; set the first row to have an input of 0 and an output of 0 and the seconds row to have an input of 4096 and an output of 0.
Most Display Module types have multiple speed inputs and these are shown in the setup as channels called Speed 1 Raw, Speed 2 Raw etc.
The raw speed outputs are scaled in Hz.