Originally Posted by: Mike M 
... I have my staging yard working.
Ie. Train pulls into siding one and then releases train in siding two and so on.
I have four sidings.
When a train goes into siding four it then releases the first train again.
Problem is when the first train is released it goes in reverse.
All of the other sidings work as planned.
I am using the viessmann (5217 s88) and the Viessman 5213.
Cheers Mike
Hello Mike,
I confess to having problem understanding the environment around your layout, external to the staging yard and how that part operates
- Martin guessed you were using a CS2 and your reply inferred you were
- I am unsure from that same reply if you do have shuttle routines set up (deliberately or otherwise) and/or if they inter-operate with your general layout routine that involves the 4 trains in the staging sequence.
- and just to be clear, can you confirm that your locos are digital or analogue
- Denis suggestion about the resistor is aimed at addressing those locomotives with older decoders that do not retain their memory.
Can you please confirm ....
- Do you have these bleeder resistors installed
- If ALL the trains using Yard1 behave this way - or is it only some (you have indicated more than one). and do the locos that fail , fail every time
- If some, do those locomotives(decoders) relate to a particular age/generation
- how long does it take for a routine to run (from the time a train enters Yard1 and stops to the time a train enters Yard4 and triggers the Yard1 train to go again)
Generally speaking I see the following reasons why a loco will reverse
- Manually (Operator on Throttle)
- Controller (Only possibility for a CS2 is the shuttle option)
- Analogue Voltage - reverse pulse caused by crossover wiring (e.g. multiple power feeds with poor grounding. or poor isolation of a slowdown (braking) module sections.
- PC control.
A faulty s88 or k8x(dead section control) could not do this by itself, so I am wondering why you approached the Viessman help line - is there something else involved.
So other questions
- Please provide information on anything that involves unusual wiring, braking modules, combination Analogue/Digital wiring
- Do you use PC or wireless (iThingy) throttle
- Do you use the same power supply for all the yards - any chance that a pulse is generated because of diverse feeds or poor common grounding
- When you observer the "Direction Status", of the loco that reverses, on the controller - does it match ? (this may be unreliable if you are using older decoders)
- - If you DO see it change in line with the actual locos direction of movement please state WHEN. i.e. soon after it enters Yard1 and stops, When the Auxillary train enters Yard4, or sometime in bewteen.