If you're looking in a date DMP file to see what closure was received on a CCC Switcher 84, look for the following type of entry:

CMainFrame::ProcessSwitcherMessage: Port=1, Box=1, Card=0, Cmd=C, Data=FF1F001C

That would be a closure on ABus DIn12. See the chart below; Data are separated in this example, to make them easier to read. ABus Din12 = FF 1F 00 1C ABus Din13 = FF 2F 00 1C ABus Din14 = FF 4F 00 1C ABus Din15 = FF 8F 00 1C ABus Din16 = FF 0F 01 1C ABus Din17 = FF 0F 02 1C ABus Din18 = FF 0F 04 1C ABus Din19 = FF 0F 08 1C BBus Din12 = FF 1F 10 1C BBus Din13 = FF 2F 10 1C BBus Din14 = FF 4F 10 1C BBus Din15 = FF 8F 10 1C BBus Din16 = FF 0F 11 1C BBus Din17 = FF 0F 12 1C BBus Din18 = FF 0F 14 1C BBus Din19 = FF 0F 18 1C CBus Din12 = FF 1F 20 1C CBus Din13 = FF 2F 20 1C CBus Din14 = FF 4F 20 1C CBus Din15 = FF 8F 20 1C CBus Din16 = FF 0F 21 1C CBus Din17 = FF 0F 22 1C CBus Din18 = FF 0F 24 1C CBus Din19 = FF 0F 28 1C DBus Din12 = FF 1F 30 1C DBus Din13 = FF 2F 30 1C DBus Din14 = FF 4F 30 1C DBus Din15 = FF 8F 30 1C DBus Din16 = FF 0F 31 1C DBus Din17 = FF 0F 32 1C DBus Din18 = FF 0F 34 1C DBus Din19 = FF 0F 38 1C