From reading this post and testing things out myself it seems as if OUTPUT 10 is otherwise unusable if one is also using the TWI module (which requires G30 to be checked).
Brad – Can you confirm this or otherwise advise how OUTPUT 10 can be used while still using a TWI?
(I note that the TWI documentation is very clear about it using OUTPUTS 7, 8, and 9 but it doesn’t say anything about 10.)
Thanks!