PLX SM AFR Serial

[ne0c0de]

Ahh, I see. So a single wideband controller sends sensor data as if from 4 different sensors. Nothing has "changed" in the PLX implementation, it is EFILive's implementation of the PLX serial protocol that is a bit naive. It assumes (incorrectly) that only a single sensor data packet will be transmitted from a single wide band controller.

Depending on the complexity of the fix, it may make it into the next public release due out in a day or two.
If not, then it will be in the next update. The schedule for that update is not yet decided.

Regards
Paul

Yes you are exactly right. When you scroll through the gauge with only one wideband connected, it will still show the battery voltage and sensor info. You can connect additional sensors and then all the data will be through the same TX pins. Attached is the address location and sensor type.



And here is an example they provided if two wideband and an EGT is used.

Example: 2 SM-AFR and 1 SM-EGT
Address for First SM-AFR = 0
Data from First SM-AFR = 4
Address for Second SM-AFR = 0
Data from Second SM-AFR = 5
Address for SM-EGT = 1
Data from SM-EGT = 15
0x80
0x00 First SM-AFR Address MSB
0x00 First SM-AFR Address LSB
0x00 First SM-AFR Instance
0x00 First SM-AFR Data MSB
0x04 First SM-AFR Data LSB
0x00 Second SM-AFR Address MSB
0x00 Second SM-AFR Address LSB
0x01 Second SM-AFR Instance *Instance is automatically incremented by 1 if there is the same sensor module address on the chain.
0x00 Second SM-AFR Data MSB
0x05 Second SM-AFR Data LSB
0x00 SM-EGT Address MSB
0x01 SM-EGT Address LSB
0x00 SM-EGT Instance
0x00 SM-EGT Data LSB
0x0F SM-EGT Data MSB
0x40
(Repeats 100mS from time of start bit)

I hope this is updated in a day or two as i was nearly gonna order a new wideband kit.

Thanks again for all your help.

[Blacky]

Attached is the address location and sensor type.

Thanks for the address table update, I was looking at an older/incomplete table that only went up to 20 (in the serial protocol PDF document).

Regards
Paul

[ne0c0de]

Thanks for the address table update, I was looking at an older/incomplete table that only went up to 20 (in the serial protocol PDF document).

Regards
Paul

No Problem as long as the update is coming soon

[Blacky]

No Problem as long as the update is coming soon

It is fixed now and working correctly on our test jig - after adding two additional (non-wideband) sensor values to our wide band O2 serial data simulator.
It will be available in the public release due out very, very soon.

Regards
Paul

[ne0c0de]

It is fixed now and working correctly on our test jig - after adding two additional (non-wideband) sensor values to our wide band O2 serial data simulator.
It will be available in the public release due out very, very soon.

Regards
Paul

Wow Paul that was quick. I hope the update comes soon so I can finish what I have left pending.

Also Paul, I know its the wrong thread but I don't find B5220 in the 2017 GM Trucks which helps me in setting a hard rev-limiter. It was available in 2016. Can you have it added? Also is there a no read protection coming for the 17 ? It would be really be helpful to protect the tunes.

Thanks

[GMPX]

B5220 has not been located in the later OS's (2016+), the parameter is just an 8bit 0 or 1 , needle in a haystack stuff.
The read protection on the ECM's that require an Auth-Code is a problem, we have not been able to come up with a workable solution to that yet.

[ne0c0de]

B5220 has not been located in the later OS's (2016+), the parameter is just an 8bit 0 or 1 , needle in a haystack stuff.
The read protection on the ECM's that require an Auth-Code is a problem, we have not been able to come up with a workable solution to that yet.

Thanks GMPX cause i have another tuner with HPT and he emailed them and they said it does not exist. It was weird cause i don't think the factory would remove the option and make it to not exist.

Thanks again for looking for me. Hope you find it by accident

[GMPX]

Well, that'll be why we couldn't find that parameter in the later OS's then

[ne0c0de]

Well, that'll be why we couldn't find that parameter in the later OS's then

LOL ... Gr8.

And now I have to find something else to get the hard banging rev limiters ...

Most of them come up to the shop and say Speed limit and RPM Limiter. Now they have to wait a while ...

[Blacky]

Just posted an update which has the PLX fix here: https://forum.efilive.com/showthread...ublic-Release)