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Creating and Editing Display Setups

3.5.2.1

CAN Bus Speed

The display CAN bus speed must match that of the connected device for the CAN to work. To set
the bus speed, go to Config | CAN Speed and select the appropriate speed.

3.5.2.2

CAN Message Masks

The LDS4 supports 32 individual CAN message boxes. By default, each arbitration code used is
assigned a single message box. If more arbitration codes are used on a given page than there
are message boxes, channels using the extra codes will not be displayed.

To overcome this, CAN message masks can be used. Select Config | CAN Message Masks... to
show the CAN Message Mask editor. Check Use Message Masks to turn on message masks and
enter an appropriate message mask. For example a message mask of 0x7FE will allow receipt of
two arbitration codes on a message box; a mask of 0x7FC will allow receipt of 6 arbitration codes
on a message box.

Note: Using CAN message masks can potentially reduce the update rate of the display.

3.5.3

Serial Sources

The LDS4 can receive data from ECUs via a single wire serial link. To set this up:

Select Setup | Serial Comms Setup...

Select the appropriate serial protocol:

GEMS for connecting to GEMS ECUs.

PI System 3 for connecting to PI/Pectel ECUs supporting the system 3 serial stream.

GPS for obtaining data from a standard NMEA GPS serial stream.

If using a GEMS serial stream, it is necessary to set the serial stream properties - these can be
imported from a GWv4 sts file using the Import button.

The serial data stream Tx from the ECU must be connected to the Serial Rx 1 pin on the LDS4.

3.6

The Components of a LDS4 Editor Setup

A LDS4 Editor setup consists of four logical components: Sources, outputs, sensors and gauges.
These are defined as follows:

Sources are non-visual objects that define how data is obtained from an ECU. Sources are
either imported from a logger setup, a serial channel from a

serial source

(shown as Serial 1,

Serial 2 etc. in the setup) or defined in the

External CAN Source

editor.

Outputs are non-visual objects that obtain information from one or more sources or other
outputs. An output manipulates the obtained data according to the sensor associated with the
output. The result can then be used in a gauge or another output.

Sensors are non-visual objects that define how the data is manipulated by an output.
Examples of sensors are scalars, function tables and alarms.

Gauges are visual objects that are placed on a screen page. There are two types of gauge;
static and variable.

Static gauges do not change their appearance on the screen and include gauges such
as text labels or bitmaps.

Variable gauges change their appearance to reflect data obtained from an output.
Examples of variable gauges are bar graphs, tachos and numerical text gauges.

The following diagram shows the relationship between sources, outputs, sensors and gauges: