KEYENCE BL-600 Series - Manual (Page 173)

163
Appendices
Appendices
● Check whether the transmitter (light source) and the receiver (optical
pickup) are clean.
If moisture, oil or dust adheres to the transmitter or the receiver, wipe the units
using a soft cloth and a mild plastic cleaner.
● Check the environmental conditions.
➮ See pages ii and 72 to 80 for details.
Appendix F.2 Reading rate check mode is not 100%
Check the previous item “Bar codes cannot be read”.
Note 1: The reading rate indicates the number of acceptable readings during 100
scans of a bar code. If a bar code has spots or voids, the reading rate is reduced.
Note 2: Even If the reading rate is 20%, two readings are acceptable during 10
scans. Therefore, if the decoding match count number is set to “2”, the bar code
can be read. The read operation is not affected if the scan time for the bar code is
set long enough.
Appendix F.3 The setting data cannot be sent/received
using the setup software
Is the BL-600 set to “setting data send/receive waiting status”?
Press the TEST switch for 8 seconds to enter setting data send/receive waiting
status. (The 1st, 3rd and 5th STABILITY LEDs from the top flash.) The BL-600
setup software [[Com port]] must be set as below:
• Baud rate: 9600 bit/s
• Data length: 7 bits
• Parity: Even
• Stop bits: 1 bit
● Does the RS-232C pin assignment of the BL-600 (BL-U1 or BL-U2) match
that of the PC? Are the cables firmly attached?
● Is power supplied to the BL-600, BL-U1 or BL-U2?
● Is RS-232C used for the interface of the BL-U1 DIP switches? ➮ See page 9.
Appendix F.4 Cannot communicate successfully when using the PLC link
➮ For details, see page 130.