Method and device for slitting a material web

A device for slitting a material web traveling in the run direction comprising:

• a carrier, the carrier being in a machine frame, the carrier being movable transversely to the run direction;
• at least one knife unit, the at least one knife unit having a cutting edge, the at least one knife unit attached to the carrier;
• a first measurement transducer, the first measurement transducer being arranged on the carrier and measuring the distance of the cutting edge to a first reference point that is fixed with respect to the carrier;
• and
• a second measurement transducer, the second measurement transducer measuring the distance to a second reference point that is fixed with respect to the carrier from a zero point, the zero point being fixed in a machine frame,
• wherein an absolute position of the cutting edge in the machine frame is established by combining the measured distance of the cutting edge to the first reference point and the measured distance of the second reference point to the zero point in the machine frame.