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2/5/2019 - DOCUMENT NUMBER: 10-2226
© 2019 AEM Performance Electronics
30-2226 6 Channel CAN Sensor Module
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Predefined Outputs
are pre-configured within the system and can be used in many ways. Some examples include:
Log Mem Free (kb) which displays the amount of free logging memory (logging versions only) and Night Mode Input
Status. This output displays the state of the Night Mode 12v input (Grey wire in flying lead bundle).
Click the Show Predefined Outputs box in the Display Editor to add all Predefined Outputs
to the list.
Two common modifications necessary are 1.) Creating a new Pressure Sensor Output and 2.) Modifying the tach output
scalar based on the number of engine cylinders.
Creating a new Pressure Sensor Output
Outputs are values, texts or graphics that are used by gauges or other outputs. The output that it passes is determined by
the operation that it uses.
To set up a new output:
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Click the Insert button in the Outputs tab.
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Enter the name of the new output. This should describe what the output actually generates.
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Select the operation to be used by the output from the drop-down list.
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Select the input from the drop down list.
In our example below, we will create a new scaled pressure sensor output that can be used to drive a gauge on the dash.
It will use the Analog 3 input from the 30-2206 on Pin 7. Three things are required. 1.) You must create a new Output
Name. 2.) You must add an Operation to scale the voltage into pressure units. 3.) You must define a Primary Input.
First create the new Output Name. We will use
My Pressure
.
For this example, let's assume that the sensor is a typical 0-5V analog sensor that is calibrated as follows: 0.5 volts = 0
psi and 4.5 volts = 100 psi. Consult your sensor documentation for proper calibration values. There are several options
but the easiest method is to use a Function table. Lets create a new Function to define this calibration.
In the Functions tab, create a new Function. We will call it My Pressure Sensor Function; Volts to PSI. It will convert
voltage to PSI.
Click on the (...) symbol to define the function table. Enter the data as shown below to create the calibration curve.
