Autothrotlle and PM-MCP

[Lambis777]

Thomas I use OpenCockpit Cards.
But the problem exist with or witout the OpenCockpit Cards.

The last test is only with the Magenta MCP and the fs.
Nothing More.

Lambis

[oal331]

Thomas I use OpenCockpit Cards.
But the problem exist with or witout the OpenCockpit Cards.

The last test is only with the Magenta MCP and the fs.
Nothing More.

Lambis

If i was in your position, i would trying to make all as simple as i could.

1) First make a fresh installation of PM's MCP and check with all default values.

2)Check also 777 and 737 ac

3) No CDU or GC running

4) Try the same at FS9 Maybe there is an issue with new Fsuipc

5) Update your Programs (PM's MCP and Fsuipc)

6) Try them i single PC to avoid netwaork problems

7) Try to read the values from Fsuipc for these throttle offsets. Do they change or they are stable?

regards


Eddie

[JonathanRichardson]

>Today morning i have make a test and i change the values in the MCP cycle time.
I give values from 30 to 70 and the bevavior of the A/T is the same.

So, on the speed tape of the PFD you see large speed differences?

>I make test without CDU.

Why? I'd keep the whole system running - the ref N1 comes from the CDU most likely.

>The frames or the fs are up to 40.

That sounds rather fast - unless you have a very high end machine. Cinema and TV is 25fps // US TV 30fps. Faster is not necessary. Perhaps cap it at 25fps for a while to see if it helps.

>I use the FS and the MCP in the same computer (no network).

Even more reason to cap the framerate. Give the MCP some processing time.

> The lever go up and down.

I would mainly be interested only in software, what is the speed indication on the PFD. If this is a hardware problem, that is something else, may be your hardware is feeding back wrong information and messing up the MCP - I have no way of knowing. Have you tried a pure software test? I think you will find the problem is not with the PM MCP. I have heard of some 737 hardware solutions that were set up pretty badly and caused a lot of problems. What is used for the position setting of the throttle? What drives that? Is there any other software inbetween / and what offset is being used?

>If I stop the Project magenta MCP and use the defualt MCP of the fs the A/T is stable.
Something is bother the A/T.

But that points possibly to using the wrong offset. Or whatever software is used to communicate with PM MCP perhaps also has a cycle time setting? FS2Phidget has a cycle time setting, if this is not set correctly the A/T;s will move incorrectly and can/will miss position information or be very late to update. But this is only the motion control part, not the actual commanded power of the MCP software.

>Can i send you any log file maybe you undestand what is going wrong?
From FSUIPC? from MCP? My MCP.ini ?

No - that really won't help I think. I don't think this is an issue with the MCP, if you run the MCP without hardware, you will most likely find it is correctly commanding the A/T and giving good speed holds in LVL CH and V/S and in level flight. So, it is something to do with hardware, or your control software of the hardware. Also, Thomas asked about which hardware is it - he might also have a good pointer if you can let us know.

Regards
Jonathan Richardson





Regards
Lambis[/QUOTE]

[Thomas Richter]

Thomas I use OpenCockpit Cards.
But the problem exist with or witout the OpenCockpit Cards.

The last test is only with the Magenta MCP and the fs.
Nothing More.

Lambis

What hardware do you use for Throttles?

[Lambis777]

I use the Opencockpit cards. With sioc code.

But the problem exist and with and without hardware.

I make more test and i found the following resaults:

I use clean setup of the MCP and the levers working ok.

With the follow parameters the levers working ok and these values i get from a clean setup of the MCP:
the follow values are from the MCP.ini
N1ref=95
N1TOref=88
N1GAref=95
N1CLBref=84
N1CRZref=95
ThrRedAlt=1000

Now when i run the CDU these values are change and the levers go crazy up and down.

My aircraft ini file that i use for the CDU have wrong N1 values?
------------------------------
Also i notice When i push the V/S to make a climb the label in the EICAS screen CRZ is not change to CLB.
But if i push the FLCH the CRZ change to CLB.
I don`t know if this is normal. Just i report it in any case.

Lambis

[Thomas Richter]

I use the Opencockpit cards. With sioc code.

But the problem exist and with and without hardware.

I make more test and i found the following resaults:

I use clean setup of the MCP and the levers working ok.

With the follow parameters the levers working ok and these values i get from a clean setup of the MCP:
the follow values are from the MCP.ini
N1ref=95
N1TOref=88
N1GAref=95
N1CLBref=84
N1CRZref=95
ThrRedAlt=1000

Now when i run the CDU these values are change and the levers go crazy up and down.

My aircraft ini file that i use for the CDU have wrong N1 values?
------------------------------
Also i notice When i push the V/S to make a climb the label in the EICAS screen CRZ is not change to CLB.
But if i push the FLCH the CRZ change to CLB.
I don`t know if this is normal. Just i report it in any case.

Lambis

Which Offsets do you control with SIOC for the Throttles?

[Lambis777]

I use the 088C & 0924 if i remember good.( iam at work right now).

Lambis

[Thomas Richter]

I use the 088C & 0924 if i remember good.( iam at work right now).

Lambis

But you know that you don't have to use this Offsets ?
Because the MCP writes of course as well to this Offsets when A/T is active!

From Pete's Offset list (Manual) it is clearly described that the Offsets 88C and 924 is not to use for direct input.
088C, 2, Engine 1 Throttle lever, –4096 to +16384
[Programs controlling throttle directly from user inputs should write to 089A instead if the input should be disconnectable via offset 310A (e.g. for auto-throttle management)]

[737NUT]

I can tell you from direct expierence, i tried all the different offsets, it didn't matter. Had the same issue, throttles that jerked all over the place! Only when using PM-MCP. Default FS AT and my levers moved smoothly.

[NicD]

Just so you know it's possible .... I'm using PM-MCP (cpflight hardware) and controlling the A/T with OpenCockpits servo card and SIOC code. Having no problems and throttles move smoothly and as expected.