KEYENCE BL-600 Series - Manual (Page 103)

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Chapter 6 Functions for Reading Operation
6
6.3 Label Orientation Mode
You can specify the orientation of the bar code labels to be read.
The label orientation mode allows the BL-600 Series to only read the bar codes in
the specified orientation if the bar code labels are moving in both the forward and
reverse directions.
Normally, the unit can read bar codes regardless of the orientation.
➮ See page 53.
■ Timing diagram
* The timing diagram above shows the case for the “single label read mode”.
• A reading error is issued if the BL-600 Series reads a bar code label moving in
an orientation that is not specified.
• This mode can be used with the desired multi-label read mode. However, the
BL-600 Series does not read bar codes moving in an orientation that is not
specified.
• You can specify the orientation individually for Codes 1 to 4, such as specifying
“forward orientation” for Code 1, and “reverse orientation” for Code 2.
4 9 0 0 0 0 0 0
4 9 0 0 0 0 0 0
Forward
orientation
Reverse
orientation
OK/NG NG
<Specified orientation> <Non-specified orientation>
Trigger input
Bar code
Laser beams
Communication time
OK/NG output