Omron V440-F, User Manual

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Appendices
G-14 V440-F C-Mount Code Reader User Manual
• Note:
Whenever
Guard Bar
is enabled, the presence of guard bars (also called “bearer bars”) is required for decoding
to take place.
G-9-4 Symbol Length #2 (Interleaved 2 of 5)
Usage:
Useful in applications where I 2/5 symbols of a specific length are
required.
Definition:
The
Symbol Length # 2
field is one of two fields against which the
decoded symbol is compared before accepting it as valid or rejecting it.
Serial Cmd:
<
K472, status,check character status,check character output,symbol length
#1, symbol length #2 ,guard bar status,range mode status
>
Default: 6
Options:
0 to 64, even only
Important:
If
Range Mode
is disabled, the length of the symbol must
match either
Symbol Length # 2 or Symbol Length # 1
to be considered
a valid symbol.
If
Range Mode
is enabled,
Symbol Length # 2
and
Symbol Length # 1
form a range into which the length of the symbol must fall to be considered
valid.
G-9-5 Guard Bar Status (Interleaved 2 of 5)
Usage:
Useful when I-2/5 multisymbols are enabled to prevent false data output.
This typically occurs with highly tilted or skewed symbols.
Definition:
A guard bar is a heavy bar, at least twice the width of the wide bar, surrounding
the printed I-2/5 symbol and helping to prevent false reads.
Serial Cmd:
<
K472, status,check character status,check character output,symbol length
#1,symbol length #2, guard bar status ,range mode status
>
Default: Disabled
Options: 0 = Disabled
1 = Enabled
G-9-6 Range Mode Status (Interleaved 2 of 5)
Usage:
Useful in applications where I 2/5 symbols of a specific length are required.
Definition:
When
Range Mode
is disabled, the reader checks the value of the symbol
length against the values set in
Symbol Length # 1
and
Symbol Length #
2
. If the symbol length does not match either of the preset values, then it is
rejected as invalid.
When
Range Mode
is enabled,
Symbol Length # 1
and
Symbol Length #
2
are combined to form a range of valid symbol lengths. Any symbol length
that does not fall into this range is rejected as an invalid symbol. Either of
the preset symbol length values in the
Symbol Length # 1
and
Symbol
Length # 2
fields can form the start or end of the range.
Serial Cmd:
<
K472, status,check character status,check character output,symbol length
#1,symbol length #2,guard bar status, range mode status
>
Default: Enabled
Options:
0 = Disabled
1 = Enabled