Pepperl+Fuchs FUQ-B8, Руководство пользователя

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VB24
5
Step 3 – Focus the Scanner
The reading distance depends on the focus distance of the scanner and should be set
according to the application requirements. The Focus Position is set directly through the focus
adjustment screw on the front panel of the scanner. This screw moves the internal lens of the
scanner to change the focal length of the scanner. The setting is continuous but should not be
set beyond the limits "Too Far" or "Too Near" which appear on the display at the extremes of
the focus range. Although the scanner reads across the entire focus range, there are three
guaranteed positions which correspond to the reading diagrams in par. 7.4.
1. Power up the scanner
.
Wait for the power up sequence to finish. By default the scanner focus is in
the Unlocked position. The alternating message on the display shows the mechanical Focus
Position.
2. Using a screwdriver turn the focus adjustment screw in the desired direction, clockwise (focus nearer to
the scanner) or counterclockwise (focus farther from the scanner). The focus position in centimeters and
inches is shown on the scanner display.
NOTE
The value of the Focus Position must be stored in memory. If the mechanical position changes by
more than the allowed tolerance of the value in memory, an alarm will be sent. See the Focus
Lock function in step 4, Mode Configuration.
As an additional visual aid during focusing, the indicator LEDs show the relative focus position
as follows:
READY
GOOD
TRIGGER
COM
STATUS
SETUP
LEARN
TES T
FOCUS
READY
GOOD
TRIGGER
COM
STATUS
SETUP
LEARN
TES T
FOCUS
READY
GOOD
TRIGGER
COM
STATUS
SETUP
LEARN
TES T
FOCUS

less than 30 cm
 
30 cm NEAR
 
32-38 cm
READY
GOOD
TRIGGER
COM
STATUS
SETUP
LEARN
TES T
FOCUS
READY
GOOD
TRIGGER
COM
STATUS
SETUP
LEARN
TES T
FOCUS
READY
GOOD
TRIGGER
COM
STATUS
SETUP
LEARN
TES T
FOCUS
 
40 cm MEDIUM
 
42-58 cm
 
60 cm FAR
READY
GOOD
TRIGGER
COM
STATUS
SETUP
LEARN
TES T
FOCUS

more than 60 cm