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Auto-trigger with initial trigger and timeout
To optimize the power used by this function, the monitoring can be started by an initial
trigger and can then terminate itself after a selectable time (timeout) or at a falling trigger
edge. Rising trigger edges after the procedure has started are ignored until the result has
been transferred.
In the following example, images are acquired by the trigger until an image has been
recognized and decoded, or until the timeout stops image acquisition.
①
②
a
b
c
Figure 3-7
Note
Duration of image acquisition interval and decoding time
Note that the image acquisition interval (b) is always the same length as the decoding time
limit (c).
Number of acquired images = {(Timeout/Acquisition interval) - 1}
SIMATIC MV500
Operating Instructions, 05/2019, C79000-G8976-C494-02
Trigger initiates the operation.
Trigger signal is ignored.
Image acquisition time
Image acquisition interval
Limit of the decoding time
No code found.
Code found.
Time diagram: Auto-trigger with initial trigger and timeout
3.3 Options for image acquisition and image processing
Image processing
47
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