Garmin 430W Interconnect to GPS 496

[tomagin]

I also have about the same equipment. VP-200, TruTrak, ADI and 496. The harness was done for me when I bought the equipment. They put 4 separate RS-232 outputs to pin 56 on the 430. All will be configured to "Aviation" which is what all the devices take. If one needed a different format you would use the output of one of the other pins and configure that one differently. I haven't tested it out yet but it was done by the pros so I assume it is going to work.

[sneedrv-6]

My flight plan goes from the 430 to the 496. The thing I hate about it is that now you can't use the 496 to get info on other airports unless I am missing something. So flying CC with the 430 I may want to use the 496 to find an airport with self serve fuel. Am I missing something here?

Originally Posted by mburch

Here's what you need to do:

1. Connect an RS-232 OUT pin on the 430W to the 496's serial IN pin.
2. Change the corresponding RS-232 OUT format on the 430W to "Aviation".
3. Change the serial port format on the 496 to "Aviation In".

Note that this only works one way - i.e. you can't enter a flight plan on the 496 and have it appear on the 430W (no way could that ever get certified!).

mcb

[mburch]

Originally Posted by sneedrv-6

My flight plan goes from the 430 to the 496. The thing I hate about it is that now you can't use the 496 to get info on other airports unless I am missing something. So flying CC with the 430 I may want to use the 496 to find an airport with self serve fuel. Am I missing something here?

Well, you can still use the 496 to look up and get information about any airport, navaid, waypoint, etc.... but if you want to navigate to it, you have to dial in the identifier on the 430. Unfortunately there is not a way for the noncertified handheld GPS to send navigation info back to the certified panel mount GPS.

mcb

[SteinAir]

Originally Posted by sneedrv-6

My flight plan goes from the 430 to the 496. The thing I hate about it is that now you can't use the 496 to get info on other airports unless I am missing something. So flying CC with the 430 I may want to use the 496 to find an airport with self serve fuel. Am I missing something here?

Nope...pretty much every one ends up snipping that wire (or we don't hook it up to begin with), because it does become a pain in the rear. I went through that on the install for my own plane.....

Cheers,
Stein

[w1curtis]

Originally Posted by SteinAir

Nope...pretty much every one ends up snipping that wire (or we don't hook it up to begin with), because it does become a pain in the rear. I went through that on the install for my own plane.....

Cheers,
Stein

Kind of a drastic step for the much benefit that this option allows, huh? There is a major benefit in having the active flight plan in the portable. I just added a switch on the transmit line but the only time I've used it was one time when I wanted to restart the 430 in flight but still have the active plan in the portable. When the 430 first starts up, the default route is to Garmin in Kansas and otherwise this would be sent to the portable.

[luv2flypilot]

Originally Posted by SteinAir

Nope...pretty much every one ends up snipping that wire (or we don't hook it up to begin with), because it does become a pain in the rear. I went through that on the install for my own plane.....

Cheers,
Stein

I was wondering if I installed an in-line switch to disconnect the GPSMAP 496 RS-232 OUT (yellow wire) to the GNS430W serial input, could I just activate this switch and then be able to use the 496 to directly "Go To" an airport or would you also have to go into the set-up of the 496 and also deactivate the "Aviation In" serial port set-up?

Any thoughts would be appreciated before I rewire my panel and find out this is still not a quick fix.

[w1curtis]

Originally Posted by luv2flypilot

I was wondering if I installed an in-line switch to disconnect the GPSMAP 496 RS-232 OUT (yellow wire) to the GNS430W serial input, could I just activate this switch and then be able to use the 496 to directly "Go To" an airport or would you also have to go into the set-up of the 496 and also deactivate the "Aviation In" serial port set-up?

Almost. The 430w will not "listen" to a 496. Just add a simple switch that will disconnect the GNS-430W output RS-232 to the 496. -When you want to use the 496 independent of the 430, just turn the switch "off."
-When you want to have the 496 follow the flight plan of the 430, turn the switch "on."
-No re-configuration of the 430 or 496 would be required when the switch is flipped.

[Garage Guy]

Originally Posted by w1curtis

When you want to use the 496 independent of the 430, just turn the switch "off."

A question for anyone who has done this:

What exactly does the 496 do when you disconnect it from the IFR GPS that is feeding it a flight plan. Does the 496 still keep the flight plan active, so you have to cancel or delete it manually? Or does it automatically deactivate it? If so how long does it take to do that?

Basically, I'm trying to figure out in advance if I'll be happy with the way the 2 units are going to interact, the 496 manual doesn't give much in the way of details about this...

--Paul

[IowaRV9Dreamer]

I have a similar question to Paul's above: Say you don't have the switch to isolate the 496 from the 430, and you enter a flightplan into the 430. It gets crossfilled to the 496 and off you go.

Now what happens if you use the 496 cursor, select some other aiport, and hit direct to? Does it stop "listening" to the flight plan coming from the 430 and fly the direct-to, or does it not allow the direct-to?

Thanks for any info,

[Garage Guy]

Hi Dave --

I have flight plan cross feed working to our 496 now, so let me answer my own question (and yours too). Though I am feeding from a GX60 it should be basically the same from a GNS 430.

If you have Aviation In selected on the 496, it will take its flight plan from Port 1 serial in. If you then select Direct some other fix on the 496, it will show that other fix for just as long as it takes for it to receive the next flight plan frame on Port 1 (about one second with our GX60). The same if you go into the 496 and Deactivate the current flight plan... that only has effect for about one second, until the 496 sees the flight plan again in the next series of "aviation format" sentences coming in.

One way to get the 496 to stop listening to the flight plan on port1 is to go into Setup->Interface and select some input format other than Aviation In. That is doable but it's a bunch of button pushing. IMHO an external switch is the way to go (which is what we have now... works great).

--Paul