Rockwell Automation Allen-Bradley 48CR Series, Руководство пользователя

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72 Rockwell Automation Publication 48CR-UM001A-EN-P - November 2019
Chapter 7 Parameter Overview
Capture Mode
Capture Mode relates to the way that images are captured and processed.
Figure 26 - AOP
Figure 27 - WebConnect
Capture Mode
– Rapid Capture
In a rapid capture mode, one or multiple captures (as many as 32) can
be taken at an interval that the time-between-captures parameter
specifies. In this mode, the only limiting time factor is integration and
transfer timing.
– Continuous
Continuous mode is useful in applications with slower line speeds or
where symbol spacing is random or not time dependent.
In Continuous mode, image captures are taken throughout the read
cycle in a multi-buffered format (see Figure 28 ). The code reader begins
processing the first captured image simultaneously with the capture of
the second image. Captures continue to occur throughout the read
cycle until an end condition occurs. End conditions can be a timeout, a
new trigger, the last frame in a capture sequence, or a combination of
the previous options.
Figure 28 - Continuous Mode Image Capture
• Default: Continuous
• Options: 0 = Rapid Capture
1 = Continuous
Capture
End of
read cycle Start of
read cycle
Processing time