Rockwell Automation 2755 StrataScan Bar Code Readers - Manual (Page 15)

2–3 Hardware Features
Publication 2755-6.13
Disc Operation
As the disc rotates, the laser beam hits the disc. The laser beam is
then projected onto the mirror and then projected out through the
reader’s window.
The reflected light travels toward the mirror. The reflected light is
then projected onto the rotating disc where it is detected by an
internal sensor.
Mirror
Laser
Detector
Scan Disc
Bar Code
Reflected Light
Laser Beam
Reader LEDs
There is one green and one red LED on the readers. The table below
provides an explanation of the reader’s LED status.
LED State Indicates
Solid Red the reader has power.
Solid Red, Flashing Green
the reader has transmitted a successful read or the
reader is in program mode.
Flashing Red and Green the reader has a motor failure.
!
ATTENTION: With a software command, both the
red and green LED’s can exchange their meanings. If
that command is active, then the following table with
the following LED states applies.
LED State Indicates
Solid Green the reader has power.
Solid Green, Flashing Red
the reader has transmitted a successful read or the
reader is in program mode.
Flashing Green and Red the reader has a motor failure.