FH 55 fanuc 15ma

This machine lost its memory.

Fanuc had made memory backup fairly recently.

Was able to reload cnc parameters.

But, pmc parameters are in the hex looking stuff.

And it says file error when it starts to load.

It have lots of experience in loading controls .

But this one is giving me a run for my money.

On the PC side I got:

I/o softkey,
Fdcas.
Input .
Execute.
With chanel set to 1.

Swapped cd4a and cd4b on base 0 board.
Tried different bauds, different chanels.
Tried different bits on k17 keep relay etc.

Can't see a page on pmc side for transfer protocol.

Like baud, stop bits etc.

We have no orignalpaper copy of parameters.

Any help would be greatly appreciated.