ILR Application and Absence When on Tier 1 Entrepreneur

Hi Everyone.

I was just wondering if any one knows about the continuous time and absence you can have when you're on a Tier 1 Entrepreneur Visa.
As far as I know you can't be outside UK for more than 180 days each year, however, the nature of my business implies that I have to travel a lot so I wonder if I can be outside the UK for more than 180 days each year while I won't lose my eligibility for ILR.

Thanks in advance.