Rockwell Automation 2755 Atomscan Bar Code Scanner - Manual (Page 32)

Chapter 4
Installing the Scanner
4–5
A package sensor may be used to trigger the scanner and decoder. It must be
placed so that it is tripped for the entire time that the bar code symbol is in
the scan line. The sensor may remain tripped even after the symbol has
moved on, but it must go OFF and then back ON to trigger the next package.
Use the following guidelines when installing the package sensor.
•
Mount the package sensor and its reflector so that the scan line does not
strike either of them.
•
Install the reflector within the operating range of the package sensor.
•
The package sensor’s beam should be broken before the label is in
position.
•
The package sensor should remain active while the entire symbol is
within the scan line.
•
Make sure there is no chance that the scan from the scanner will strike the
reflector. The resulting glare will blind the scanner temporarily.
Package Sensor
Orientation