KEYENCE BL-180 - Manual (Page 12)

1.1 BL-180 Connections
4
Hints on correct use
Trigger (TIM) input
Set the trigger input to be long enough to allow the laser beam to cover the entire
bar code.
If the trigger input needs to be on for only a short period of time, select one-shot
mode.
Influence from mirror surface
If a mirror surface (metallic surface) is near the bar code and the laser beam re-
flects off the mirror, the BL-180 may cause a read error. Protect the unit from the
influence of a mirror surface by covering the surface or changing the bar code la-
bel position.
Bar code pitch
Do not place several bar codes in the field of the laser beam, unless you are in
multi-label read mode (Multi 3).
If you use multi-label read mode (multi 3), the BL-180 can simultaneously read 2
to 4 bar codes in the field of the laser beam.
Influence from photoelectric sensor
When using a photoelectric sensor to control trigger, block the sensor beam so it
does not enter the BL-180 optical pickup.
The beam from the photoelectric sensor can interfere with the BL-180, deteriorat-
ing reading performance. If this case, reposition the photoelectric sensor.
OK/NG
STABILITY BL-180
Optical
pickup
Light
source
Object
Bar code
OK/NG
STABILITY BL-180