Default setting for point motor

[paul_garwood]

Hello - I have several Hornby point motors R8247 but all the addresses are programmed at random, please how do I return them all back to default and start again?

[Chrissaf]

Depends what controller you are using. In principle you write 8 to CV8 to factory reset the R8247s

 

Easy if you have an Elite or a Select with version 1.6 or 2.0 firmware.

 

If you have RailMaster / eLink, then it can still be done and this previous post explains how.

 

Programming and Resetting R8247 Decoders using RM.

https://www.hornby.com/uk-en/forum/post/view/topic_id/9065/?p=2

[Brew Man]

One thing about writing to CV8 that I don't get is, in the case of a loco that has been programmed with an address too high to be accessed by the controller, how do you write to its CV8 register? Sorry, slightly away from the OP's problem.

[Chrissaf]

If you are using the normal 'Direct Mode' programming where the loco [and/or the R8247 Accessory Decoder] are connected to the controller programming track piece or direct to the controller 'PROG' output..

 

Then in this programming mode you do not have to enter any DCC Address information to programme any CV. In direct programming mode, the configuration data is sent as a DCC Broadcast Packet, which means that all decoders have to respond to the packet regardless of their configured address.

 

This is precisely, why you have to use a separate programming connection in 'direct mode' programming to prevent collateral misconfiguration of other decoders that are not being targeted.

 

It is 'Operate Mode' programming where you have to specify the decoder DCC Address. Thus in 'Operate Mode' you target the decoder you want to configure by using its DCC Address and the other decoders that do not have this targeted address ignore the configuration instruction being sent.

 

[Brew Man]

Right, got it.