Omron V440-F, Руководство пользователя

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Appendices
F-18 V440-F C-Mount Code Reader User Manual
F-11 Capture Timing
Note: Capture Timing
applies only to
Rapid Capture Mode
.
Note: Number of Captures
and number of frame delays (
Time Between Captures
)
must be the same.
F-11-1 Time Before First Capture
Usage:
In almost any moving line application, a time delay is needed to ensure that
a symbol will be in the reader’s field of view at the beginning of the capture
sequence. Using
Rapid Capture Mode
allows the delay system to take
effect and tune capture timing. For most read cycle setup, the first is used
for trigger framing, and all the rest will be set to the same time to create a
measured spacing between captures until the last capture.
Definition: Time Before First Capture
in a moving line application is the time between
an external trigger event and the occurrence of the first capture.
Serial Cmd:
<
K242, time before 1st capture ,time between capture 1 and capture
2,,,,,,,,time between capture 7 and capture 8
>
Default: 0
Options:
0 to 65535 (2.097 seconds, in 32
µS increments)
F-11-2 Time Between Captures
Usage:
This is useful in applications where more than one symbol can appear
during a single read cycle (multisymbol), or where line speeds are slow
enough that captured frames might overlap or miss a symbol.
Definition:
A time delay can be inserted between individual frame captures in
Rapid
Capture Mode
.
Serial Cmd:
<
K242, time before 1st capture, time between captures [time 1,time
2,...time7]
Entering 0s will result in no time between captures.
Entering a different value in each field will vary the time delays accordingly.
Note:
You must enter time values along with comma separators for each
field you want to change. If you omit fields, or enter only commas, the fields
will remain as previously set.
Important:
If the reader is configured to capture more than
8
images, the
last (or 8th) delay value will be repeated for the remaining captures.
Default: 0
Options:
0 to 65535 (2.097 seconds, in 32
µS increments)
Start of
Read Cycle
Time Before First Capture
Processing
Diagram A
Start of Read Cycle
End of
Read Cycle
Time Delay Between Captures varies.
Time Delay Between Captures = 0
Diagram B
3 2 1 4 5