Fuzzy Studio checks for collisions between the robot and its virtual environment constantly and both the joint of the robot that are colliding and the elements it collides with turn red when a collision is detected.
Some of those collision are volontary, for example if you want to have a direct contact between your robot base and it’s support.
Fuzzy Studio allows users to disable some collision detections using collision filters :
This feature is found in the Top Toolbar in the Tools section.
You can select 2 different objects and add an exception rules so that the collision detection doesn’t detect collisions between those 2 objects. You’ll notice that exceptions already exist on consecutive robot axis, they are necessary otherwise collisions between 2 consecutive axis would permanently be detected no matter the robot position.