Keyence BL-180 User Manual download pdf (Page 77)

A.6 Troubleshooting

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 whether the protective label is attached to the transmitter or the

receiver.

Remove the protective label before using the BL series.

Check whether the protective label is attached to the transmitter or the receiver.

Check the environmental conditions.

See “Hints on correct use” on page 4.

Reading rate check mode is not 100%.

Check the previous item “Bar codes cannot be read”.

The Read rate indicates the number of acceptable decodings (reads) during 10

scans of a bar code. When a bar code has stains or defects, the read rate is re-

duced.

However, even when the read rate is 20%, 2 decodings are possible during 10

scans. Therefore, if the number of decode matches is 2, the bar code can be read.

If the trigger input can be set enough long, the read operation is not affected.

Initial settings cannot be sent to the BL-180 series using the setup software.

• Check whether the communication parameters such as baud rate and data

length conform to the settings of the BL-180.

• Check whether the pin assignment of RS-232C cable conforms to those of the

BL-180 and the PC. Check that the cable isn’t disconnected. Also check the

BL-U1’s connection.

• Check whether the BL-180’s or BL-U1’s power switch is on.

• Check whether the PC’s RS-232C interface is “enabled”.

• If you are using the BL-U1, check that its DIP switches are set to RS-232C.

Note

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Keyence BL-180 User Manual Page 77