Device description
26
BCL 548
i
Leuze electronic
The proven code fragment technology (
CRT
) enables bar code readers of the BCL 500
i
series to read bar codes with a small bar height, as well as bar codes with a damaged or
soiled print image.
With the aid of the
CRT decoder
, bar codes can also be read without problem in other
demanding situations, such as with a large tilt angle (azimuth angle or even twist angle).
Figure 4.2:
Possible bar code orientation
With the BCL 548
i
, configuration is generally performed with the aid of the GSD file.
The BCL 548
i
needs a suitable activation to start a read process as soon as an object is in
the reading field. This opens a time window ("reading gate") in the BCL 548
i
for the read
process during which the bar code reader has time to detect and decode a bar code.
In the basic setting, triggering takes place through an external reading cycle signal.
Alternative activation options include online commands via the host interface and the
autoReflAct
function.
Through the read operation, the BCL 548
i
collects additional useful pieces of data for diag-
nosis which can also be transmitted to the host. The quality of the read operation can be
inspected using the
alignment mode
which is integrated in the webConfig tool.
A multi-language display with buttons is used to operate the BCL 548
i
as well as for visu-
alization purposes. Two LEDs provide additional optical information on the current operating
state of the device.
The four freely configurable switching inputs/outputs "SWIO 1 … SWIO 4" can be assigned
various functions and control e.g. activation of the BCL 548
i
or external devices, such as a
PLC.
System, warning and error messages provide assistance in setup/troubleshooting during
commissioning and read operation.