Laser LS8000-3 manual Example

LaserSpeed 8000-3 Instruction Handbook

Interfacing with the LS8000-3

Example 1:

You are using an external make/break optical switch to begin and end the measurement. The optical gauge has a smaller spot size than the LS8000-3, so it will more exactly detect the edge of the product. When the part enters the measurement area the switch outputs a Low (0V) signal, and when there is a part in the measurement area, the switch outputs a High (24V) signal. So, when the part enters the measurement area, a Low High transition occurs, and when the part exits the measurement area, a High Low transition occurs. This configuration requires that you set the Material Present Input Mode to 2 (External/Active High). When the part enters the measurement area

(Low High) a measurement begins, and when the part exits the measurement area (High Low) the measurement ends. If the LS8000-3 is in Final Length Mode, the elapsed length will be transmitted over the serial port when the part exits the measurement area.

Optical Make/Break Sensor Fibers

Part to be measured

Line movement

Optical Make/Break

Sensor Fibers

Part to be measured

Line movement

Part Breaks Sensor Beam Part Clears Sensor Beam

Material Present Input

Material Present Input

Part No. 93463 / Drawing No. 0921-01561 Page 45 of 221 Revision A (Sep 2007)