Outputs to CDU

[Bill]

Hi.

Putting together an Opencockpits CDU. Is it the PM CDU software which causes the EXEC button to illuminate, as well as DSPY, FAIL etc.? (Though it's just the EXEC LED I'd like to have functional)
I have an interface card available and wondered how to program it for these CDU/FMC outputs.

Regards,
Bill

[Bill]

Apologies! I just found some answers in other threads, relating to DSPY/FAIL/, but, although I know it's a basic question, not sure how to interface the EXEC led with the CDU software.

Bill

[Trevor Hale]

Hi Bill,

Not sure if I understand your question.

You need to have some kind of interface that will allow you to connect LED's either that, or if you rip apart an old keyboard, the Numlock, Scroll, Lock, and Caps Lock keys can be used for those led's instead.

Trev

[Bill]

Trevor,

Thanks for the reply - my description was as clear as mud, your tips have been noted.
I'm building the FMC with Opencockpits parts, an Australian PCB, Canadian EL wire for backlighting, and a PS1 screen. They're all going together well.

Regards,
Bill

[aluver]

Hello, it's a PM feature, have a look at the FSUIPC offsets list :

Offset 052C : length 2 CDU Lights (Read Only)

Bit 0 (EXEC)
Bit 1 (MSG)
Bit 2 (FAIL)
Bit 3 (OFST)

[Bill]

Thanks for the pointer towards these offsets.

Bill