PMU CAN addresses

PMU
1

I setup a friends PDUs, Keypad, DTA S100 and DTA NT Dash a few years ago (before there was a lot of support). I muddled through and got it all working - whether it was the best way of doing it is another matter. Occasionally the keypad would stop responding if the car was left on for a few minutes with the engine not running. My assumption was that it was a CAN conflict but it seemed to work apart from that so it wasnt looked at much further…

So my friend decides that he wants an ECUMaster dash to replace the DTA dash. Having updated the firmware in both the PMUs and used the new software, I can see a few obvious errors in what I did previously. However the old NT dash seemed to be able to get data from the CAN even if there were errors in the CAN addresses. The ADU picks up data from the front PMU but not the rear and some of the outputs seem to be doing odd things occasionally (such as the horn sounding briefly).

I believe that the problem is due to the way I have exported the status of various functions and switches. Can anyone give me any tips on how to do this, especially on how to select the CAN address.

Thanks in advance!

2

potentially you have both PMU’s on the same CAN address, check your configurations tab for what their base address is.

When there’s only a few devices I’ll usually separate them by 100 addresses to make it really easy to see what device is sending when using Light Client.

Pro tip, you can export .CANx files from PMU to PMU/ADU and it does all the config stuff for you on the other end when you import it.

Keypad should only be controlled by 1 PMU and then it’s state or the logic (either way works) can be exported. in the keyboard setup you can check a box to export onto a different CAN but (1 or 2) or export the states under a different CAN address then the one communicating with the keypad.

Any more specific questions are harder to answer without seeing your calibration files

3

Thanks for the message. I reset the CAN IDs in both the PMUs and updated the ADU. Everything worked OK, but the second PMU data still didnt appear on the ADU. I reloaded the CANx file and it all started working!

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