6 months abroad in a row or 6 months in total per year?

I've already been abroad for several days on various dates this year, and I have a permanent residence permit. Does that mean I only have the remaining 180 days left for my travels, or does the 180-day limit, i.e., six months after each departure, apply anew? I've already read the laws, but I can't figure out how exactly this regulation is handled from one sentence: "If the foreigner leaves the country and hasn't re-entered within six months or a longer period determined by the immigration authorities." And how exactly is it verified? Paragraph 6 states the following: " If the foreigner leaves the country for a reason that is not temporary in nature."

I want to travel as much as possible this year since I have finished my studies.