KEYENCE BL-700 Series - Manual (Page 53)

Chapter 3 Functions for Reading Operation
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3
4. In the test mode, the unit outputs the serial communication data in the following
format every 100 scans. By connecting the BL-700 to a PC and using a BL
setup software terminal, the following data can be displayed on the PC screen.
➮ See P.79 for details of operation.
* ON/NG LED turns ON but OK/NG output does not turn ON.
5. Press the TEST switch again to exit the test mode.
Gently pressing the TEST switch once (for less than 3 seconds) will cause the BL-700 to
read a bar code once. (It also performs serial output and OK/NG output.)
3.4.2 Tact check mode
In this test mode, the unit counts how many scans can be decoded (the decode
count) while reading one bar code.
This mode is useful when testing which line speed can be expected when actually
implementing the BL-700 system on the line.
This is enabled when the bar code label is moving.
■ Operation
Follow the instructions below.
1. Hold down the TEST switch for 5 seconds. (Release the switch when two
STABILITY LEDs illuminate.)
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 moving on the line.
3. Depending on the decode count, the BL-700 displays the STABILITY LEDs as
listed below 0.2 seconds after the last bar code has passed the laser emission
range. By checking the display, you can recognize how much stability the BL-
700 ensures during readout. To display the readout count, follow the procedure
in 4 to display the data on the PC screen.
Readout data m :
Delimiter
* m = 0 to 100 (zero-suppressed)
10°
Reading distance
Panel surface
* Reading distance = 230 mm (BL-700/701)
380 mm (BL-740/741)
500 mm (BL-780/781)
Tips