How do I re-number the chips in dummy cars as getting error messages

[AddlestoneP]

Hi Everyone,

I think I am being thick.

I have had my APT re-powered and a Class 101 converted to DCC, both with lights in the non powered parts. I have changed the decoder number to four digits from the default '3' but when I ask Railmaster to change the codes for the non powered cars, two DVT's on the APT and one on the DMU it gives me an error message and says that it cannot read the CV's.

I understandf the reason for this is that ther system requires the motor to register a load against the identification of the decoder.

How do I solve this?

All help most welcome.

Many thanks,

Howard

www.addlestoneparkway.co.uk

[Rog RJ]

There are 2 simple options you can use.

Method 1 is to put both the powered car and the unpowered car on the programming track at the same time and do the programming.

Method 2 is to take the decoder from the dummy car and program it in the powered car and then put it back in the dummy car.

PS I already answered this in the general section

[AddlestoneP]

Method 1 did not work for the DMU I will try with all three parts of the APT and see what happens. Taking chips out is not really what I want to be doing but if needs must. Thanks for your help.

[Fishmanoz]

See my answer to your General forum post addlestone. Problem is needing a load on the motor connections to read or program some decoders, not including the 8249 I don't think.