Sequencer Set Active Chunk - Basler acA2040-55 User Manual

AW00123409000

7.23.3.5 Sequencer Set Active Chunk

The Sequencer Set Active chunk feature is available in acA1920-25, acA2040-55, acA2040-120,
acA2440-35, acA2440-75, acA3800-14, and acA4600-10 cameras.
The Sequencer Set Active chunk feature adds a chunk to each acquired image. The chunk contains
the index number of the sequencer set that was in the active set when the frame start acquisition
trigger occurred.
To enable the sequencer set active chunk:
1. Make sure the Sequencer feature is enabled.
2. Use the Chunk Selector to select the Sequencer Set Active chunk.
3. Use the Chunk Enable parameter to set the value of the chunk to true.
Once the Sequencer Set Active chunk is enabled and Chunk Mode Active (see Section 7.23.4 on
page 347) is enabled, the camera appends a chunk with the applicable sequencer set index
number to each acquired image.
After an image with an appended chunk has been received by your computer the chunk must be
retrieved. For information about retrieving data chunks, see Section 7.23.5 on
You can set the Chunk Selector and Chunk Enable parameter value from within your application
software by using the Basler pylon API. The following code snippet illustrates using the API to
activate the chunk mode, and enable the Sequencer Set Active chunk:
// make chunk mode active and enable Sequencer Set Active chunk
camera.ChunkSelector.SetValue(ChunkSelector_SequencerSetActive);
camera.ChunkEnable.SetValue(true);
You can also use the Basler pylon Viewer application to easily set the parameters.
For more information about the pylon Camera Software Suite and the pylon Viewer, see Section 3.1
on page 61.
The Sequencer Set Active chunk feature is only available when the

Sequencer feature is available.
The Sequencer Set Active chunk feature can only be enabled when the

Sequencer feature was enabled.
For more information about the Sequencer feature, see.Section 7.7 on
page 216
Basler ace USB 3.0
Features
page 348.
343