Hi Paul
Many thanks for your reply.
Yes you are correct like an idiot I did connect T & C with throw and close what an idiot!!!!
"SELECT ACCY - 198 - ENTER - 1" Still not quite sure what you mean with enter-1?
In this case the point motor was in use so didn't need to remove the 198. But have always had the problem setting the addresses.
I think there is a further complication with this particular motor in so far as it seems to dump it's address for a reason best known to itself every now and then.
I might add I'm very new to all this which does not help.
Today I installed an acc bus including a DCC Concepts Cobalt alpha Central (Digitrax now just for train control) all worked fine inc the problem motor till I powered system down to go to lunch when powered up again was when I had the motor problem.
Sorry for long winded reply but I have got it all working again think I have sussed it out now practised on a spare motor connected directly to the Digitrax DCS 52 an after a couple of false starts think I know where I was going wrong. Grovelling about under the layout with things in a difficult position did not help!
Thanks again
You were a great help