Use the good offset for CRS

[sikorsky77]

hi everybody

I search the good CRS Offset when i fly in FMS flight plan management for the Longitude modded with WorkingTitle.aero  G3000/G5000 package

The showed magenta CRS value in the PFD is the selected FPL Heading track needed to join the end way-point of the current leg i am flying in

i try different offset 6040 , 6050 , 6060 , 610C and the closest was the 6060 but with a small différencie of 2/3 degrees (maybe MAGVAR ?)

if somebody knows , i will appreciate his help

Regards 

Thierry

[John Dowson]

Those offsets are related to the GPS settings - I think you are looking for the OBS settings which are held in 0x0C4E and 0x0C5E.

John

[sikorsky77]

Hi John

Thanks for answer

i think that my english or flying explanations are no so clear , in the Longitude , you can only change the CRS (OBS) value by rotating the Course encoder when you have selected in NAV Source "NAV1" or "NAV" 2 in the Pilot GTC Screen and in this case you validate me the usage of offset 0C4E (that i found and works perfectly in my script) , but when you select "FMS" NAV Source  in GTC , CRS shows the CRS Heading of the current FPL Leg you are flying to and so logically you can't modify at all the Course value by the CRS Rotator selector, so it is for this reason i am searching a CRS Offset referring to flight plan leg and/or GPS setting, it is why i was looking the 6xxx offset related to GPS you can see in my original post

to explain you better, you can see screenshot i make of Garmin 3000/5000 of the Longitude depending of NAV Source selection

the screenshot 1,2,3 show "FMS" Mode selected in NAV Source , CRS is 226 because it is the CRS heading to join Strasbourg VOR (first SID leg after T/O in the Flight Plan) and can't be modified by CRS Rotator selector of the Aircraft

the 4 & 5 screenshot show "NAV1" Mode selected in NAV Source with a CRS of 046 that i can modify by CRS rotator selector , works also as well for NAV2

I hope i explain you better what i am looking for

Reagrds

Thierry

CRS setting Managed by NAV Source Selection.pdf

[John Dowson]

I am sorry but I am still confused, and am not that familiar with the G3000/G5000. I don't understand the use of CRS in relation to the GPS. If you want to change way-points, wouldn't you need to do this by changing the flight plan in the FMS? The data held in the GPS offsets are read-only and are just populated from data received from the FS based upon your flight plan.

You also say that it is logical that you cannot modify the CRS value but it seems that this is what you want to do....this doesn't make sense to me. I'm sorry but I don't think I can help you any further with this.

John

[sikorsky77]

Hi John

"The data held in the GPS offsets are read-only and are just populated from data received from the FS based upon your flight plan."

i am ok with you about this , the CRS value of the PFD when you fly in FMS mode is not changeable in G3000/5000 because it is the CRS heading of the current computed FPL leg i am flying in, 

so the Offset i search is for my point of view a GPS Offset related to FPL for CRS heading of the leg , i found $6060 but like i said in my original pots , it gives 229° that generates a 3° degrees deviation with the 226 CRS Heading of Leg in the PFD in my screenshot

for the moment i decrease a minus -3° of 229° to show in MCP LCD to be align with the 226° of PFD

Thanks for your help

 

[John Dowson]

There is another simvar available (see https://docs.flightsimulator.com/flighting/html/Programming_Tools/SimVars/Aircraft_SimVars/Aircraft_RadioNavigation_Variables.htm😞

Quote

GPS WP TRUE BEARING

True bearing to waypoint.

Radians

This is not available in any offset, but can be added to a free user offset using the facilities described on page 34 of the Advanced User guide. You could try adding that to see if that holds the required value. Or check for any other simvar (or lvar) that may hold the CRS heading value that you are looking for and add that to a free/spare FSUIPC offset.

John

[sikorsky77]

Hi John

thanks for this solution i will have a look asap (i never read Avanced User Guide which is interesting)

Creating personal offset is very easy

Moreover i wish you an happy new year for your family and you

Best regards

Thierry

[John Dowson]

Let me know if that simvar is the one you are looking for....

...and a very Happy New Year to you and your family as well.

Regards,

John