Oppps

[Nemo]

Simple mistake from me last month.
My DCC output runs through a DPDT switch which sends power to either the running track or a short piece of programming track. One particular day last month I was programing an LS chip that I had just fitted into a loco and was renumbering the said chip. In my haste I forgot to check which way the switch was and sent the program down the running track instead of the programing track. No problem I thought as no locos were on the running track, however I forgot about my two point (switch) decoders that control 13 points on the railway and consequently reprogrammed them to thing they were loco decoders. Yep I had killed all motorised point movement.
After talking to Mark at Grail last weekend (muns of Garden rail outlet) he gave me a few thing to try, the first one to alter CV29 to 128. well this worked and now my point decoders are both up and working again. Thank for the advice Mark, much appreciated.

 

[muns]

Glad it worked Steve

 

[muns]

Let me explain what I happened in this case...


[list type=decimal]
[*]When on a programming track, all decoders will process the CV programming request unless they are "locked" by some mechanism or other.
[*]Steve is using Massoth 4 channel Switch decoder 8156001.
[*]These can act as either a Switch decoder or a Loco decoder.
[*]Steve used his Navigator to program the Loco address.
[*]The Navigator, prompts for the speed step settings when changing the Loco Address.
[*]The Navigator automatically calculates and programs CV29, CV1, CV17 & 18 during this process.
[*]When CV29 was set by the Navigator, the value stored into the switch decoders cleared the bit that is used to determine of it acts as a Switch decoder.
[*]Resetting CV29 to 128, restores the switch decoder to act as a switch decoder and not a loco decoder.
[/list]

 

[stockers]

I am really glad you know these things Mark!

 

[PhilP]

Let me explain what I happened in this case...


[list type=decimal]
[*]When on a programming track, all decoders will process the CV programming request unless they are "locked" by some mechanism or other.
[*]Steve is using Massoth 4 channel Switch decoder 8156001.
[*]These can act as either a Switch decoder or a Loco decoder.
[*]Steve used his Navigator to program the Loco address.
[*]The Navigator, prompts for the speed step settings when changing the Loco Address.
[*]The Navigator automatically calculates and programs CV29, CV1, CV17 & 18 during this process.
[*]When CV29 was set by the Navigator, the value stored into the switch decoders cleared the bit that is used to determine of it acts as a Switch decoder.
[*]Resetting CV27 to 128, restores the switch decoder to act as a switch decoder and not a loco decoder.
[/list]

Please note:
Point 8 references CV 27.. I believe this should be CV 29.

 

[muns]

You are right Phil, typo on my part - correcting the original