Lfo Problem

I have a few parts I’m writing where I’d like the LFO in Renoise to start at the middle of the cycle, as in the top of the sine wave or sawtooth wave. Is there a way to achieve this?

There is a pattern effect called Reset, which you place at the point in the song where you want the LFO to start (Right-clicking the reset button will place it in the pattern editor).
The two last numbers are the position where the LFO starts. XX80 starts it in the middle. (XX40 - 1/4 XX20 - 1/8 etc.)

X7YY is the specific command, where YY are the values mentioned in the quote above.

http://tutorials.renoise.com/wiki/Meta_Devices#Modulation_Devices