Sergey22

Hi All, I'm building a python script to integrate Challanger 650 CDU with Winwing PFP 3N. I've got the proper datarefs, specifically CL650/CDU/{cdu_number}/screen/text_lineX and CL650/CDU/{cdu_number}/screen/style_lineX where X is from 0 to 14 representing the line. The text lines are straightforward and represent the text, but the style lines are byte arrays with 24 bytes (same number as columns) which seem to be representing the style/color of each character. I can confirm through experimentation that different character colors displayed on CDU have different style_line byte elements. I was hoping there is a documentation around what each byte value or each bit in the byte means so I don't need to reverse engineer it. Do you guys think it would be possible to get this published? Sergey

For what it's worth I did manage to find it - abus/CL650/ARINC429/FDCU-1/words/FCC/0/IAS_REF . It's set to 1 when Mach is used and 0 if IAS/kts.

Hi All, I'm working on integrating Challenger with the winwing PAP3 panel. The PAP3 panel can indicate with speed selector is Kts or Mach, just like on PFD speed tape, but I'm struggling to find a dataref which indicates the mode that's selected. Any suggestions?