Recall Panel on B737NG

[luker22]

Hello fellow builders,

I'm currently working on the Master Caut switch and recall panel on my B737NG glareshield. I use PMSystems and I want to simulate the annunciation of warnings via the sixpack using PMSystems.

On the real aircraft the recall panel is also a large "button" which you can push to recall any warnings via the annunciators. Now I think PMSystems will (if not already) allow simulation of the recall function on the sixpack.

My question is...if anybody has done it can they tell me whether they use a momentary switch for the recall panel or do they use a simple single throw single pole switch?????

I know this is probably dependent on how it is coded in the PMSystems logic for the recall panel but it looks to me that a STSP switch is a more logical choice. I couldn't tell which to use as the logic for this in the B737 logic file in PMSystems appears to be incomplete.

Look forward to hearing from you

Cheers,
Luke

[aluver]

Hello Luke, haven't yet try with hardware wired but in pmsys737.lgc file we can read :

if recallswitch then
sixpackfltcontdisp = 0
sixpackelecdisp = 0
sixpackhyddisp = 0
sixpackapudisp = 0
sixpackfiredisp = 0
sixpackengdisp = 0
sixpackantiicedisp = 0
sixpackdoorsdisp = 0
sixpackfueldisp = 0
else
sixpackfltcontdisp = sixpackfltcont
sixpackelecdisp = sixpackelec
sixpackhyddisp = sixpackhyd
sixpackapudisp = sixpackapu
sixpackfiredisp = sixpackfire
sixpackengdisp = sixpackeng
sixpackantiicedisp = sixpackantiice
sixpackdoorsdisp = sixpackdoors
sixpackfueldisp = sixpackfuel
endif

56F8 .1 RecallSwitch : offset for Recallswitch in sysvar file,

so I think it's ok to use a momentary push button linked to offset 56F8 ( bit n° 1 ). When you push the recall button, all annonciators turn off, then when you release it, some annonciators tuen on, depends of systems conditions, as in real.

[carlos hermida]

Yes it works with a momentary push button, i have done with my setup and works perfect, here are two pic links.

http://www.abcfamily.com.br/project737ng/fotos737ng/glareshield/DSC01548.JPG


http://www.abcfamily.com.br/project737ng/fotos737ng/glareshield/DSC01539.JPG


Hope that helps ,

Carlos

[pylet]

I haven't wired mine up yet but when I built the sixpack panel backer I placed it on a momentary push switch so to do a recal you would push the faceplate of the sixpack. I trimmed out enough room around the sixpack to allow it to freely move back and forth in the glareshield. I thought this would be more realistic. Here are real crappy pictures but should help. (Better pilot than photographer)

Normal postion
http://www.digitaldoubts.com/ForumPics/1.jpg

Pushing for recal. It doesn't sink in much but the switch works and is spring loaded to push panel back out.
http://www.digitaldoubts.com/ForumPics/2.jpg

[luker22]

Thank you for all your replies (including images!) to this post.

The way is clear for me now and it seems the way to go is with a momentary switch.

Lyle your set up on the glareshield looks great :cool: and that is exactly what I propose to do. Thanks for the images.

Cheers,
Luke