I had a question about the proper way to configure settings and fire controls so that a PDC equipped with AMMs will automatically try to shoot down incoming missiles.
I was in the situation where a far forward colony made first contact with the enemy, and shortly thereafter a massive enemy fleet jumped in and began the march. I was massively outnumbered, but had some drone launchers and multi-missile drones that I spent a few hours micro managing to keep firing as the enemy continued closer.
Once the enemy closed within 360m km, my AMM PDCs detected the first salvoes of size 6 enemy missiles 5m km out from colony. My AMMs have a range of 2.5m km, and the missile fire controls on my PDCs has a Range vs Size 6 Missile (or smaller) of ~8m km. Each PDC has 4 of these fire controls, 39 size 1 launchers, and are loaded with 39 of my AMMs. I went into Combat assignments, and for each PDC I set the "Point Defense Mode" for Fire Control 1 to "Two anti-missiles per target missile", with "Max PD Range in 10k units" set to 300. I then assigned all the launchers to this Fire Control as the salvoes were coming in with 20 missiles per salvo. The idea was the PDCs would begin auto-firing at 3m km out, so the enemy missiles would fly into the 2.5m km range of my AMMs. I set these settings on all PDCs, then advanced time 20 minutes (expecting the time advancement to be interrupted when my PDCs began launching missiles, was this the mistake?).
Time advanced, and my colony, PDCs, and ships disappeared in a bevy of mushroom clouds. None of my PDCs fired any AMMs. Two escorts I had in orbit made an attempt using Final Defensive Fire with their Gauss turrets, but there were too many missiles. Where did I go wrong?