What Fagor control? I assume you mean the ladder/logic file is lost?
You should have had a back up on file of all the parameters and Logic file.
If you do not have this and it is a retrofit, then there is not alot of chance of obtaining this other than the retrofitter themselves.
As a last resort, you would need someone who is capable of re-commissioning
It seems the I.T. company is still in business, hopefully they have a copy.