Image Acquisition Option "Individual Trigger - Siemens SIMATIC MV540 H Operating Instructions Manual

Image processing
3.3 Options for image acquisition and image processing
3.3.1

Image acquisition option "Individual trigger"

How it works
With this setting, one image is acquired per trigger followed by one read.
If several objects need to be acquired in a very short time, acquired images can be buffered
before they are processed.
To allow this, the images can be buffered and the image buffer size can be selected:
● SIMATIC MV500 S and SIMATIC MV500 H can buffer 50 images.
● SIMATIC MV500 U / X can buffer 30 images.
The optical reader transfers the results of the reads as soon as it has processed them.
"Image buffer size = 1" setting
If the buffer size is set to the value 1, this mode corresponds to a sequential processing
chain:
Trigger → Image acquisition → Decoding/processing → Result transfer.
New triggering can be performed only when the decoding/processing has been completed.
Figure 3-4
"Image buffer size > 1" setting
With image buffer sizes greater than 1, intermediate buffering takes place between image
acquisition and processing and between processing and result output.
Image acquisition can at times be performed in a faster sequence and processing can also
buffer results briefly prior to transfer. This allows brief periods of peak load to be handled.
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Time diagram: Individual trigger with image buffer size = 1
Operating Instructions, 06/2018, C79000-G8976-C494-01
SIMATIC MV500