0. pass=bl17su
1. EGVb Close
2. Set Mirror, Gratingの選択、M21b or M22b, and G1200 or G600.
3. EGVb Open
3. 光位置モニターで、bのラインに光を合わせる．Pre-MirrorのRelative Mb1Ry=-57
4. Set Energy, ID status as you like.