FSUIPC 7.50 No TCAS on ND

[Mbergsma]

Hello,

I recently upgraded to fsuipc 7.50 because of msfs2024. However using Prosim B738( Homecockpit software ) flying in msfs2024 is not possible.

Ever since the upgrade to fsuipc 7.50  when flying on Vatsim in msfs2020 I don't get any traffic ( TCAS ) to show on my ND

several other pilots using Prosim B738/A320 experienced similar behaviour. Downgrading to fsuipc 7.4.16 resolves this issue.

Are there known problems with fsuipc7.50  regarding this issue ?

 

Thanks in advance for any reply,

 

Marinus Bergsma.

[John Dowson]

36 minutes ago, Mbergsma said:

Downgrading to fsuipc 7.4.16 resolves this issue.

What about in 7.4.18, the previous version to 7.5.0?

There was a change introduced in 7.4.18 that could cause this:

Quote

  - removed automatic change of AI aircraft state (from engine start or sleeping to enroute) when aircraft altitude
    differs from ground altitude by 100 feet or more. Previous behavior can be re-instated by adding:
       AIAboveGroundLimit=100
    to the [General] section of your FSUIPC7.ini file (although this is NOT recommended)
    Note this change was made as it looks like the ground altitude for some sleeping AI traffic was changing
    to 0, causing them to switch from ground-to-airborne

So, if using a 3rd party traffic injector, you need to set that ini parameter. This is the documentation for this parameter (from the Advanced User guide:

Quote

AIAboveGroundLimit: this parameter determines when the state of AI traffic is automatically promoted from ground to airborne. When set, if the difference between the AI aircraft altitude and the ground altitude is greater than this value, then the aircraft will be switched from ground to airborne and the aircraft's state changed to enroute.

In FSUIPC7 versions before 7.4.18, the default value of this parameter was set to 100. However, this can cause issues when using MSFS AI traffic, causing ground based traffic to appear airborne. This was therefore changed to 0, and so no automatic change of the aircraft state is performed.

However, this can now cause issues when using 3rd-party AI traffic injectors where airborne traffic is not present or drastically reduced. If using a 3rd-party traffic injector then the recommended setting for this parameter is 100, which will revert to the behavior as it was before the 7.4.18 release.

John

[Mbergsma]

Hello John,

As I could not find a previous version of fsuipc older then 7.4.16 I have no means to test fsuipc 7.4.18 regarding this issue.

I will however add AIAboveGroundLimit=100 to fsuipc.ini to see if that resolves the issue in fsuipc 7.50

 

Thanks for your reply, I'll keep you informed,

Regards,

Marinus Bergsma.

 

[Greg Huelsken]

23 hours ago, Mbergsma said:

Hello John,

As I could not find a previous version of fsuipc older then 7.4.16 I have no means to test fsuipc 7.4.18 regarding this issue.

I will however add AIAboveGroundLimit=100 to fsuipc.ini to see if that resolves the issue in fsuipc 7.50

 

Thanks for your reply, I'll keep you informed,

Regards,

Marinus Bergsma.

 

Same Problem here.  4.17 works works,
in 4.5.1 "AIAboveGroundLimit=100" to fsuipc.ini was inserted. no effect.
The vatsim traffic stays invisibel in tcas.

[John Dowson]

18 minutes ago, Greg Huelsken said:

Same Problem here.  4.17 works works,

Presume you mean 7.4.17...

19 minutes ago, Greg Huelsken said:

in 4.5.1 "AIAboveGroundLimit=100" to fsuipc.ini was inserted. no effect.

And here I presume you mean 7.5.1...
When did you add this - did you do it when FSUIPC7 was not running? If not, try again...

This is  the only change that can cause this issue, and adding that should fix it. This has been confirmed by several users.

If that is not your issue, then I will need to investigate further. But I will not look into this until the New Year now.
But please try again with this set to confirm.   

[Greg Huelsken]

Thank you, Pete! You 're right.
FSUIPOC offline, inserted "AIAboveGroundLimit=100" in [General] - Section,
restart FSUIPC 7.5.1 and traffic is shown again in tcas.
Problem solved! Merry christmas!
Kind regards,
Greg

[John Dowson]

Its John - Pete retired over 5 years ago now. Glad its now working, Happy Christmas!

Regards,

John

[Mbergsma]

Hello John,

And to confirm above : "my traffic" on ND has also returned with fsuipc 7.5.x !

Thanks for the help.

Have a good Christmas and a happy New Year,

Regards,

 

Marinus Bergsma.