KEYENCE BL-600 Series User Manual
Page 108
Chapter 6 Functions for Reading Operation
98
6
3. Read the bar codes moving on the line.
Depending on the decoding count, the BL-600 Series displays the STABILITY
LEDs as shown in the following table 0.2 seconds after the bar code has
passed the field of the laser beam. By checking the display, you can notice the
reliability that the BL-600 Series ensures during the readout (how capable it is
for the line speed).
*
ON/NG LED turns ON but OK/NG output does not turn ON.
*
The BL-600 Series continues to read data while bar codes are in the field of
the laser beam. Therefore, the STABILITY LEDs do not illuminate.
*
If reading bar codes with the same data continuously within 0.2 seconds, the
BL-600 Series cannot differentiate between the data and continues to scan
and add to the decoding count without displaying the STABILITY LEDs. If
the BL-600 Series reads different bar codes within 0.2 seconds of each
other, it displays the STABILITY LEDs to show the decoding count.
4. The BL-600 Series sends data.
The BL-600 Series sends the data to the PC in the following format every time
the STABILITY LEDs illuminate.
*
A value greater than 9999 cannot be added.
*
You can set the BL-600 Series so that it will not send data while in the test
mode.
➮ See page 54.
Note: It should be judged that the BL-600 Series is capable for the line speed if the
decoding count is always more than 5 to 10. If the decoding count is only 1 or 2,
you need to perform a reading rate check
(
➮ See pages 94 to 96.)
and change the
position of the bar code reader to obtain a higher reading rate.
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Partition mark
m = Decoding count (1 to 9999) (Zero-suppressed)