If your referring to another members question , about why his ISL was idling faster than normal, after start up ( automatically) there is a program in the ECM, to increase idle speed after start up, usually first of the day.
My Cat will go to a faster idle in cool weather, to aid warm up.
As I mentioned to the other poster, I don't know what the parameters are for the auto idle up are on an ISL.
Could be a question to ask if you're in a Cummins shop.
Like , gemert, I can set the idle higher to help bring up air pressure faster by using my cruise control, cruise on in neutral, hold resume till idle speed comes up.
99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.