We have the Meldas 700 controls, so it might not be quite the same, but on ours...
In Prep, select 'Tool Sel', type in the tool number you want to call up, press input, press and hold cycle start.
In MDI, select $2, and type T2400; (or whatever 20's/30's tool number) and press Cycle start
In Auto, Just call T2200. Which $ you do it in depends on the machining mode. G710, 711,712 would be in $1. G720, 722 would be in $2.
Most holders will have a G50 U offset if you are trying to get it to centerline as well, so it would look something like this:
G710
G712
M80S3=5000
T2700
G50 U50.8
G0 X0 Z-1.
CNC Product Manager / Training Consultant