What I mean by this is basically what "on leadin" does, but the problem I'm having is that this type of rules is ignored if a particular cut is made without a leadin. On start doesn't quite work because if I want to have the height controller for the plasma cutter activate say 5mm after starting to cut the shape, "on start" measures from where it pierces, so the leadin length when there is one is subtracted from that 5mm distance. So with a 10mm leadin, the height controller triggers when its still in the leadin.
I want the height controller to trigger away from this area because especially on thicker material there can be a fair bit of dross that gets spit out onto the top surface around the pierce and leadin. This messes with the reading the height controller takes in order to set the target voltage.
Cheers,