trouble code disable in '747

[Bruce Plecan]

Subject: Re: trouble code disable in '747


>Ludis Langens wrote:
>
>> The ECMs with three bytes for trouble code don't use the digits 6, 7, 8,
>> or 9 in their trouble codes.  There is also no code 11.  So the three
>> bytes go like this:
>>
>> 12 13 14 15 21 22 23 24
>> 25 31 32 33 34 35 41 42
>> 43 44 45 51 52 53 54 55
>>
>> Notice how everything fits just perfect!
>
>Excellent!  just the info I was looking for.
>
>I'm sure there's an obscure reason why they are all "1-5"...
>
>--steve
>
It's binary     0000  would be all off for diagnostics (in one group),  and
be represented by a 0 entry.  1111 would be all enabled and an entry of F.
8+4+2+1 =15 in dec. or F in Hex.   And just as examples 0011 would be an
entry of 3,  1010 would be 10 or A in hex..

Does that better explain it?.
Bruce