Need help on very strange MS3 output port bug

[sd1nl]

Hi,

I have been tracing down a really strange bug the last few days, but I cannot get my head around what is happening. I think it is firmware related.

I use LOOP 1 programmable output for airconditioning idle up, and LOOP 2 for spark table switching. Both LOOP 1 and LOOP 2 should be active when coolant is above 70 celsius, and when engine status is " 5" . So far so good.

Problem is that it doesn't work. Sometimes my airco idle up is stuck and won't go away, and sometimes it doesn't get triggered when it is supposed to.

Check out the short log. The engine is started, coolant is above 70 and engine status is " 5" : but no airco idle up. Also the spark table isn't switched back when engine status goes back to "1"

Could you guys have a quick look into this, because something is amiss here.

[jsmcortina]

I'll email you an updated ini file that includes "loop" in the datalog set.

James

[sd1nl]

Update: turns out the output ports, loops1,2,3 en airco up are all fine.

The problem is in the fact that the output ports don't seem to handle the "engine status" parameter very well. As soon as I changed this parameter to "Gammaenrich>107" everything works fine.

Another question: why is it not possible to trigger an output port on %ASE?

[Alfagta]

I think the problem is the "Engine Status" condition.
Try the "And" operator instead of the "=" Operator.

Best regards

[sd1nl]

I thought there was a choice of <, >, or =

The AND is only between two separate conditions as I recall?

[jsmcortina]

Bitwise AND is available too. See the manual: http://www.msextra.com/doc/pdf/html/Meg ... 3-243.html

James

[sd1nl]

Update: "AND" and "egine status" also doesn't work. Looks like enginen status just won't work in the output ports.

[jsmcortina]

Update: "AND" and "egine status" also doesn't work. Looks like enginen status just won't work in the output ports.

[sd1nl]

Don't have a log, sorry. But trust me on this one.

Tge msq is basically the same as the one attached in the first post, just the = has been replaced by AND

[racingmini_mtl]

Tge msq is basically the same as the one attached in the first post, just the = has been replaced by AND

That won't work. See this: http://www.msextra.com/forums/viewtopic ... 20#p444122

Jean

[sd1nl]

Read it. So am I correct in saying that I should enter the engine status in the treshold box aswell as in the hysteresis box?

[racingmini_mtl]

Yes if you want the condition to be when the masked bits are all '1' (on). Since this is likely the case, just put the same value in both boxes.

I'm sure that this is quite confusing for people who are not used to working with bit fields and masks. I hope the new 1.4 documentation will have some details on this because that is not something I would expect the average (or even experienced) user to know and understand. Even the information I linked to is probably not sufficient for the majority of users.

Jean

[sd1nl]

Would it be possible to trigger the output port on only one of the eight binary bits, in my case bit nr3 (ASE)

[jsmcortina]

Yes, that's the purpose of bitwise AND.

James

[sd1nl]

Yes, that's the purpose of bitwise AND.

James

Confusion all over here.

You mean I have to enter the engine status in binary form instead of decimal? Otherwise it is not possible to distinguish the ASE bit only.

Could you show me what I have to enter into the two fields to be able to trgger on the ASE on/off only?

[jsmcortina]

I added an example to the Setting Up manual. See:
http://www.msextra.com/doc/pdf/html/Meg ... 4-123.html

James

[racingmini_mtl]

I added an example to the Setting Up manual. See:
http://www.msextra.com/doc/pdf/html/Meg ... 4-123.html

James

Thank you for taking my suggestion to add more information on this to the manual (even if it wasn't what prompted you to add it). I think this should make it much clearer.

I don't know if this is an artifact from my browser but the 'ASE active' text straddles 2 cells in the table (I tried this in another browser and I see it in Firefox and Chrome on Win7).

Jean

[sd1nl]

I added an example to the Setting Up manual. See:
http://www.msextra.com/doc/pdf/html/Meg ... 4-123.html

James

Ok, this makes things clear to me. Thanks.

[jsmcortina]

Thank you for taking my suggestion to add more information on this to the manual

It was a good suggestion.

I don't know if this is an artifact from my browser but the 'ASE active' text straddles 2 cells in the table

I see that too. I've been testing an alternative method of generating HTML-ised version of the manuals, but it's not ready yet.

James