KEYENCE BL-700 Series - Manual (Page 52)

Chapter 3 Functions for Reading Operation
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3.4 Test Mode
Test mode can be used for the bar code reading test. Because trigger input is not
required, this mode allows you to perform a reading test easily. You can select one
of the following 3 methods to enter the test mode.
3.4.1 Reading rate check mode
The unit scans a bar code100 times and analyzes how many times it can decode
the scanned data (reading rate). This mode is useful in the following cases:
• When adjusting the mounting distance and angle
• When verifying the reading stability of the bar code to be used
This mode is enabled when the bar code label stays in the given position.
■ Operation
Follow the instructions below:
1. Hold down the TEST switch for 3 seconds. (Release the switch when one
STABILITY LED illuminates.)
2. The BL-700 then enters the mode in which the laser emission is always ON.
Attempt to use the BL-700 to read bar codes.
3. Depending on the reading rate, the BL-700 displays the STABILITY LEDs as
listed. By checking the display, adjust the reading distance and angle so that
the reading rate reaches the highest level.
10°
Reading distance
Panel surface
* Reading distance = 230 mm (BL-700/701)
380 mm (BL-740/741)
500 mm (BL-780/781)
Reading rate STABILITY LED OK/NG LED
81 to 100 % 5 LEDs ON Green
61 to 80 % 4 LEDs ON Green
41 to 60 % 3 LEDs ON Green
21 to 40 % 2 LEDs ON Green
1 to 20 % 1 LED ON Green
0 % – Red