Custom CAN/AN/DI Setup

[lim327.ap2]

Hello Everyone, was wondering if anyone can confirm / assist with my custom can setup.

Already configured my Gauge-Art Can Gauge, and Link Can-Lambda

But now for my custom CAN IO Box, converting my flex fuel sensor frequency to CAN and analog sensors: Fuel pressure, oil pressure.

CAN IO Box:
ID - 1802
BYTE0: Ethanol content (unit is %)
BYTE1: Ethanol t(byte-40 = temp in C)
BYTE2: Fuel pressure (unit PSI)
BYTE3: Oil Pressure ( unit PSI)

I then realized that the parameters that I added are actually for transmitting data out of the ecu, not for receiving data.
When filtering out the receiving data from the parameter drop down, the only applicable parameters could be CAN analog and CAN Digital?

 

[Vaughan]

There is currently  no way to take in Ethanol% over CAN, you could feed in the percentage via a CAN Analog and use that CAN Analog value in the multifuel table and anywhere else you want it. The Ethanol Temp could be fed in as a CAN Analog and then put it into the Fuel Temp fucntion.

Pressures should be brought in with CAN Analogs.

Note that anything you're sending in will need to be converted to Metric units (kPa for pressure and Deg C for temp), you could use either the Multi/Div/Offset values for this or use calibration tables to have the CAN Analog values in PSI and the actual pressure runtimes in kPa.

[lim327.ap2]

On 4/10/2024 at 9:49 PM, Vaughan said:

There is currently  no way to take in Ethanol% over CAN, you could feed in the percentage via a CAN Analog and use that CAN Analog value in the multifuel table and anywhere else you want it. The Ethanol Temp could be fed in as a CAN Analog and then put it into the Fuel Temp function.

Pressures should be brought in with CAN Analogs.

Note that anything you're sending in will need to be converted to Metric units (kPa for pressure and Deg C for temp), you could use either the Multi/Div/Offset values for this or use calibration tables to have the CAN Analog values in PSI and the actual pressure runtimes in kPa.

Thanks for the response Vaughan.
Going forward I will send the signal wire to DI 8 for the ethanol sensor

[lim327.ap2]

So I wired and setup my ethanol sensor to DI8- that's done.

Though I have setup up the communications for my IO box/ analog sensors. I'm stumped on the calibrations.

units are checked off as metric under options tab

My ultimate question is: Does the G4X need a voltage reading or does it need a measurable unit such as KPa/psi?

I'm asking if it needs voltage because in the Linear Calibration setup; its asking for an input value of A/B voltage?

For being CAN I would think it just needs a kPa value.  Is there a particular step that I'm missing?

Right now my IO box is sending out PSI, but can change it to kPa if needed.

[Adamw]

If the incoming data is already calibrated into pressure units then set the calibration to none.  If it is received as voltage then you would need to assign a calibration to convert the voltage to pressure.  

If incoming data is pressure units then it needs to be kPa - or use the multi/div to convert as it is received.   

[lim327.ap2]

Thank you! Will convert my PSI signals to kPa and test