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Andis Signal Coding

PostPosted: Wed Jan 11, 2023 9:16 am
by Auscgu
Signals for Holyhead
Signal Box 1 at Holyhead has a bracket signal with a outer home/dist signal and a junction signal which repeats the junction ahead. This shown as arms 36 & 39

HHead Sig Box 1.jpg

Holyhead Box 1

The junction bracket signal has the home signal 38 with distant from box 2 arm 73.
A branch home 36 and the cattle siding arm 35.
HHead Sig Box 2.jpg

Holyhead Box 2

HH1B38 01.jpg

The Home Bracket Signal

Re: Andis Signal Coding

PostPosted: Wed Jan 11, 2023 9:21 am
by Auscgu
HH1B38 02.jpg

The home signal if for the Dn Main to Platform 3.
The Left Branch signal is for the Dn Goods to the Import yard.
The right signal is to the cattle sidings.

HH1B39 01.jpg

The outer home bracket with Dn Main Home and Distant.
The right arm is a repeater for the Dn Goods.

Having trouble coding this 0 link signal to repeat the right arm.

Re: Andis Signal Coding

PostPosted: Thu Jan 12, 2023 12:56 am
by AndiS
I never saw anything like that. I can only think of a divergence to the right at the outer home that was taken out of use at some point. So this arm 36 would not close ever more.

You can't have a junction after the junction, not with my scripts.

That said, you could make the inner home a dependent disk. Then it would pass through the route information "unsignalled". I.e., the outer home would feel like the only home signal for the junction. However the distant arm would be a separate "stand alone" inner distant. It should clear about at the right time even though it is oblivious to the "disks" placed on the same post.

You cannot go the other way. If the inner home is "the" home, then that extra stop arm at the outer home would have to be a distant arm. But that the higher stop arm would clear at the same time which is not what anyone want to see.