That's where I didn't want to get too detailed, to avoid confusion. But what the heck, here goes:
Two models of MicroLogix controller (1100 and 1400) do support online editing, and all editions of RSLogix 500 (Micro Lite, Micro, Starter, Standard, Professional) therefore support online editing for those controllers.
Three models of MicroLogix controller (1000, 1200, 1500) do not support online editing.
SLC-500, 5/01, and 5/02 controllers do not support online editing.
SLC-5/03, 5/04, and 5/05 controllers do support online editing, but only with the Standard and Professional editions of RSLogix 500. The Micro edition doesn't support modular SLC controllers, and the Starter edition doesn't support online editing in modular SLC controllers.
There are certainly marketing brochures, websites, and Knowledgebase documents that explain this, but sometimes it's faster to just explain it here rather than find those documents.
The Original Poster, brerrabbit5849, mentioned that he has MicroLogix 1500 and SLC-5/03 controllers, and that he's getting RSLogix 500 Starter Edition software. Setting aside the possibility that he's buying a ten-year-old obsolete copy ( he posted about installing v5.0), the Starter Edition will not support online editing for him because the MicroLogix 1500 doesn't have online editing, and the Starter Edition doesn't support the online edit function in the SLC-5/03.