IFD 5 Series & IFD 4 Series Touch Screen GPS/NAV/COM

IFD 540 not talking to JPI 930

Printed From: Avidyne
Category: Avidyne General
Forum Name: IFD 5 Series & IFD 4 Series Touch Screen GPS/NAV/COM
Forum Description: Topics on Avidyne's IFD 5 Series and IFD 4 Series Touch Screen GPS/NAV/COM
URL: http://forums.avidyne.com/forum_posts.asp?TID=2454
Printed Date: 19 May 2024 at 3:37am
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Topic: IFD 540 not talking to JPI 930

Posted By: MarcDMcD
Subject: IFD 540 not talking to JPI 930
Date Posted: 31 Dec 2022 at 2:17pm

i had a new JPI 930 engine monitor installed to replace Auracle engine monitor. Now the IFD 540 is not talking to the JPI to get fuel information. My mechanic can't figure it out. Can anyone recommend an avionics shop in Texas that has experience with both IFD 540 and JPI 930?

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McD

Replies:

Posted By: HenryM
Date Posted: 31 Dec 2022 at 5:08pm

JAG Avionics ( https://jagaviationinc.com/" rel="nofollow - https://jagaviationinc.com/ ), in McGregor, installed my hangarmate's IFD440 and seems to be knowledgeable. I would take my plane there if I needed service. Another shop nearby that I hear good things about is Crystal Avionics, in New Braunfels.

Posted By: PA23
Date Posted: 01 Jan 2023 at 9:25pm

Assuming the connection between the JPI and the IFD is wired correctly take a look at this web page as you probably have the communication protocol set incorrectly.

https://techsupport.avidyne.com/kb/article/491-ifd-fuel-flow-interfaces-training/

SHADIN Z aka FADC - This 137-byte message includes two fuel information items; fuel flow rate and fuel used.
ARNAV/EI - This 13-byte message includes two fuel information items; fuel flow rate and fuel remaining.
SHADIN FUEL - This 55-byte message includes three fuel information items; fuel flow rate, fuel used, and fuel remaining.

Here's a table that summarizes the above information.

Fuel flow rate

Fuel used

Fuel remaining

SHADIN Z / FADC

Y

Y

N

ARNAV / EI

Y

N

Y

SHADIN FUEL

Y

Y

Y

Specifically you want page (slide) #8, you need to set the JPI and the IFD so that they are talking the same protocol. If I'm reading the information correctly I think you want to set the JPI to be "Garmin/Shadin Miniflow format" and set the IFD to be "Shadin-fuel" on the input serial interface the JPI is connected to.

-PA

Posted By: Sanjiv
Date Posted: 01 Jan 2023 at 11:45pm

Your IFD isn't taking information from JPI but is it working in other direction? I have IFD540 and JPI830. JPI also need the destination information to show you fuel required to destination. DO you know how are these two wired together before jumping into configurations. I think they talk over RS232.

Checkout this older forum topic. http://forums.avidyne.com/jpi-edm-930-and-ifd540_topic1608.html" rel="nofollow - http://forums.avidyne.com/jpi-edm-930-and-ifd540_topic1608.html

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PA28-236 @N14

Posted By: cavu
Date Posted: 08 Jul 2023 at 6:38pm

IFD540 and JPI 930

I tried this with the JPI GPS-C set to 1 and the RS232 channel 2 set to

IN Shadin-Fuel and

out as Aviation

I can see activity on the Comm port 2050 bytes and increasing. If the wiring was wrong, would I still be getting activity on the port?

I still do not see the fuel management screen displaying the fuel remaining or any fuel flow.

Any ideas? I did upgrade to 10.3.1.2

Posted By: rsharp
Date Posted: 09 Jul 2023 at 6:19pm

I've installed a few of these JPIs interfaced to Avidyne's and Garmin's.

Verify your Port settings on the Avidyne.

(I Used Shadin-fadc;Aviation, Your setting is one of the 2 options)

Ensure the JPI format is set correctly internally.

These were my settings for a EDM 960:

GPS BAUD RATE #3: 9600

GPS INPUT #3: AVIATION / BENDIX

GPS OUTPUT #6: GNS 430/530-WP

Settings for an EDM 900 That worked fine with a 550 and a 540.

GPS FORMAT #6: GNS 430/530-WP

The JPI interface guide showed both versions.

To check your settings on the JPI download your settings file to a USB stick and dump/print the .txt file. (Instructions below)

Randy

________

To capture settings, insert USB into EDM when EDM is in normal mode, download new, EDM will give download progress and when complete will state so, wait until EDM reverts to normal mode before pulling USB out. Download should have a text file with your settings and fuel tables.

Posted By: cavu
Date Posted: 09 Jul 2023 at 8:22pm

How do you set these baud rates etc? Didn't think those were even exposed to user.