KEYENCE BL-N90 Series - Manual (Page 99)

A-5 Troubleshooting
-17
Ap
pend
ices
The barcode was read but data
was not sent to computer. If the blue LED on the
communication unit is flashing,
the BL-N90 is connected to
another communication unit. 1) Check that the communication cable
is connected to the communication
unit.
2) Use the BL-N90 to read the BD
address barcode of the
communication unit to establish a
connection. (
page 2-13)
3) Scan the initialization barcode.
( page 2-15)
If the blue LED on the
communication unit is lit, the
BL-N90 may be connected to
another communication unit. 1) Press the page button on the
communication unit to search for the
connected BL-N90 (
page 2-18).
2) Press and hold "Trigger" on the BL-
N90 to enter sleep mode ( page 3-
14).
3) Reconnect the BL-N90 that you want
to use ( 2-13, page 2-14).
When the blue LED on the
communication unit is lit, the
communication cable for the
communication unit may not
be connected correctly to the
computer. Check that the communication cable for
the communication unit is connected to
the computer (
page 2-5).
The barcode was read but data
was not displayed correctly on
the computer. When using BL-N9R, the baud
rate, data length, parity, stop
bit length, and communication
format are different from the
computer settings. Configure all of the communication
settings so that the BL-N90 and the
computer are the same (
page 2-9).
When using BL-N9V, if the
upper case letters are showing
up as lower case letters, Caps
Lock is turned on for the
computer. Turn Caps Lock off for the computer.
The keyboard localized
settings are different from the
keyboard used on the
computer. Set the correct localized settings for the
computer keyboard (
page 3-11).
Characters are dropped. Adjust the inter-character delay setting
(
page 3-10).
The barcode cannot be read. The type of barcode being
read is set to invalid. Check the settings for the types of barcodes
that can be read. (
page 4-4).
The detailed settings such as
check digit for the read
barcode are not configured
correctly. Check the detailed settings for the
barcode (
page 4-4).
The Limit read digits settings
are not correct. Set the correct settings for Limit read
digits (
page 3-3).
A two digit barcode cannot be
read. The default BL-N90 settings for
the minimum read digits is
three or more. When using the limit read digits function,
change the settings to that barcodes with
only two digits can be read (
page 3-3).
The same barcode is read twice.
The reread prevention time is
too short. Lengthen the reread prevention time is
(
page 3-3).
Problem Possible cause Remedy