Okura Yusoki A Series Manual page 154

10.11.3.4. Case of moving X-4-5
Ex. T-axis values are
X (Origin point)
4 (Step 4)
5 (Step 5)
Red line describes the case at check box OFF. Spinning X to 5 CCW is shorter
direction than CW. So, T-axis spins 0 to +160.
To go to 5 from 4 as not-shorter direction CW is to be chosen as T-axis can not spin
+160 to +240 because of the soft limit.
T-axis never ever spins beyond the soft limit +220.
Then, T-axis eventually spins unwontedly, like T-axis to spin +160 to -120.
When the check box is ON, T-axis spins CW 0 to -200 along blue line to prevent from
unwanted spinning, as result of the OXPA-QmV logic improvement.
First, OXPA-QmV changes the robot controlling basic logic.
Second, T-axis spins from 4 (-200) to 5 (-120).
0
+160
-120
10-14