The left side movie demonstrates the real condition that EPC how to control loom.

This Reflective Sensor, EPS-601, using lens for monitoring and controlling the cloth edge of loom, if the edge position is slanted to the left or the right, sensor will detect the offset and pass the signal to Drive Controller, and inform Drive device after computation, then Drive device will push cloths to the right position, it could keep cloth at the accurate position in the operation.