Thanks for clarifying things. I thought I'd read somewhere that some servo controllers (I think it was ESU's) do provide feedback without additional microswitches and I was wondering whether the DR4024 had a similar capability but you've confirmed it doesn't.
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Out of interest, do you have any advice for ensuring physical turnout status and JMRI's perceived turnout status are synchronised when a layout is powered up? Would a JMRI start-up script that moves every turnout to, say, its 'closed' position achieve that?